Methods and apparatus to collect distributed user information for media impressions

ABSTRACT

A disclosed example includes memory; instructions in the apparatus; and processor circuitry to execute the instructions to: monitor for a mobile device communication at a merchant location; obtain a first identifier from the mobile device communication obtained at a first server in response to identifying the mobile device communication during the monitoring; store the first identifier in association with the merchant location in a database; and in response to determining that the first identifier is present in the database, send an association between the first identifier and the merchant location to a second server of an audience measurement entity, the first identifier included in a second communication from the second server of the audience measurement entity.

RELATED APPLICATIONS

This patent arises from a continuation of U.S. patent application Ser.No. 16/049,478, filed on Jul. 30, 2018, which claims priority to U.S.patent application Ser. No. 14/014,050, filed on Aug. 29, 2013, now U.S.Pat. No. 10,068,246, which claims priority to U.S. Provisional PatentApplication Ser. No. 61/845,748, filed on Jul. 12, 2013. U.S. patentapplication Ser. No. 16/049,478, U.S. patent application Ser. No.14/014,050, and U.S. Provisional Patent Application Ser. No. 61/845,748are incorporated herein by reference in their entireties. Priority toU.S. patent application Ser. No. 16/049,478, U.S. patent applicationSer. No. 14/014,050, and U.S. Provisional Patent Application Ser. No.61/845,748 is hereby claimed.

FIELD OF THE DISCLOSURE

The present disclosure relates generally to monitoring media and, moreparticularly, to methods and apparatus to collect distributed userinformation for media impressions.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 depicts an example system to collect user information fromdistributed database proprietors for associating with impressions ofmedia presented at mobile devices.

FIG. 2 depicts an example apparatus to encrypt device and/or useridentifiers, and encode the encrypted device and/or user identifiersinto an application campaign rating (ACR) identifier.

FIG. 3 depicts an example apparatus to decode encrypted device and/oruser identifiers from the ACR identifier of FIG. 2 , and send theencrypted device and/or user identifiers to corresponding databaseproprietors to request user information associated with the encrypteddevice and/or user identifiers.

FIG. 4 depicts the example apparatus of FIG. 3 decoding an ACRidentifier having some empty fields that do not contain any deviceand/or user identifiers.

FIG. 5 is a flow diagram representative of example machine readableinstructions that may be executed to collect media identifiers anddevice and/or user identifiers at mobile devices.

FIG. 6 is a flow diagram representative of example machine readableinstructions that may be executed to encrypt device and/or useridentifiers, and encode the encrypted device and/or user identifiersinto the ACR identifier of FIG. 2 .

FIG. 7 is a flow diagram representative of example machine readableinstructions that may be executed to decode encrypted device and/or useridentifiers from the ACR identifier of FIG. 2 , and collect userinformation associated with the encrypted device and/or user identifiersfrom corresponding database proprietors.

FIG. 8 illustrates an example processor system that may be used toexecute the example instructions of FIGS. 5-7, 11, 15, 17, 18, 22, and23 to implement example apparatus and systems disclosed herein.

FIG. 9 depicts another example system to collect user information fromdistributed database proprietors for associating with impressions ofmedia presented at mobile devices.

FIG. 10 depicts yet another example system to collect user informationfrom distributed database proprietors for associating with impressionsof media presented at mobile devices.

FIG. 11 is a flow diagram representative of example machine readableinstructions that may be executed to collect media identifiers anddevice and/or user identifiers at a media publisher.

FIG. 12 illustrates an example system to collect user information fromdistributed database proprietors for associating with search termsprovided by users at mobile devices.

FIG. 13 depicts another example system to collect user information fromdistributed database proprietors for associating with search termsprovided by users at mobile devices.

FIG. 14 depicts yet another example system to collect user informationfrom distributed database proprietors for associating with search termsprovided by users at mobile devices.

FIG. 15 is a flow diagram representative of example machine readableinstructions that may be executed to collect search terms and deviceand/or user identifiers at a search provider.

FIG. 16 depicts an example system to collect device information frommobile devices at retail locations for associating with impressions ofmedia presented at mobile devices.

FIG. 17 is a flowchart representative of example machine readableinstructions which may be executed to collect location data from a userand/or a mobile device.

FIG. 18 is a flowchart representative of example machine readableinstructions which may be executed to associate media impressions withmobile device location information.

FIG. 19 is a table showing example information that may be collected andstored at the example database proprietor of FIG. 16 .

FIG. 20 is a table showing example matching of impression information tolocation information provided by the database proprietor of FIG. 16 .

FIG. 21 depicts an example system to collect device information frommobile devices at a media location for collecting impression informationfor mobile devices.

FIG. 22 is a flowchart representative of example machine readableinstructions which may be executed to collect impression informationfrom a user and/or a mobile device.

FIG. 23 is a flowchart representative of example machine readableinstructions which may be executed to obtain impression information fora user and/or a mobile device.

DETAILED DESCRIPTION

Techniques for monitoring user access to Internet resources such as webpages, advertisements and/or other content has evolved significantlyover the years. At one point in the past, such monitoring was doneprimarily through server logs. In particular, entities serving media onthe Internet would log the number of requests received for their media(e.g., content and/or advertisements) at their server. Basing Internetusage research on server logs is problematic for several reasons. Forexample, server logs can be tampered with either directly or via zombieprograms which repeatedly request media from the server to increase theserver log counts. Secondly, media is sometimes retrieved once, cachedlocally and then repeatedly viewed from the local cache withoutinvolving the server in the repeat viewings. Server logs cannot trackthese views of cached media. Thus, server logs are susceptible to bothover-counting and under-counting errors.

The inventions disclosed in Blumenau, U.S. Pat. No. 6,108,637,fundamentally changed the way Internet monitoring is performed andovercame the limitations of the server side log monitoring techniquesdescribed above. For example, Blumenau disclosed a technique wherein anInternet resource (e.g., media) to be tracked is tagged with beaconinstructions. In particular, monitoring instructions are associated withthe HTML of the resource to be tracked. When a client requests theresource, both the resource and the beacon instructions are downloadedto the client. The beacon instructions are, thus, executed whenever theresource (e.g., an advertisement, content, etc.) is accessed, be it froma server or from a cache.

The beacon instructions cause monitoring data reflecting informationabout the access to the media to be sent from the client that downloadedthe media to a monitoring entity. Typically, the monitoring entity is anaudience measurement entity that did not provide the media to the clientand who is a trusted third party for providing accurate usage statistics(e.g., The Nielsen Company, LLC). Advantageously, because the beaconinginstructions are associated with the media and executed by the clientbrowser whenever the media is accessed, the monitoring information isprovided to the audience measurement company irrespective of whether theclient is a panelist of the audience measurement company.

It is useful, however, to link demographics and/or other userinformation to the monitoring information. To address this issue, theaudience measurement company establishes a panel of users who haveagreed to provide their demographic information and to have theirInternet browsing activities monitored. When an individual joins thepanel, he/she provides detailed information concerning his/her identityand demographics (e.g., gender, race, income, home location, occupation,etc.) to the audience measurement company. The audience measuremententity sets a cookie on the panelist computer that enables the audiencemeasurement entity to identify the panelist whenever the panelistaccesses a tagged Internet resources (e.g., content or advertisement)and, thus, sends monitoring information to the audience measuremententity.

Since most of the clients providing monitoring information from thetagged resources are not panelists and, thus, are unknown to theaudience measurement entity, it is necessary to use statistical methodsto impute demographic information based on the data collected forpanelists to the larger population of users providing data for thetagged resource. However, panel sizes of audience measurement entitiesremain small compared to the general population of users. Thus, aproblem is presented as to how to increase panel sizes while ensuringthe demographics data of the panel is accurate.

There are many database proprietors operating on the Internet. Thesedatabase proprietors provide services to large numbers of subscribers.In exchange for the provision of the service, the subscribers registerwith the proprietor. As part of this registration, the subscribersprovide detailed demographic information. Examples of such databaseproprietors include social network providers such as Facebook, Myspace,etc. These database proprietors set cookies on the computers of theirsubscribers to enable the database proprietor to recognize the user whenthey visit their website.

The protocols of the Internet make cookies inaccessible outside of thedomain (e.g., Internet domain, domain name, etc.) on which they wereset. Thus, a cookie set in the amazon.com domain is accessible toservers in the amazon.com domain, but not to servers outside thatdomain. Therefore, although an audience measurement entity might find itadvantageous to access the cookies set by the database proprietors, theyare unable to do so. In addition, apps that run on mobile deviceplatforms do not use cookies in the same way as web browsers. Althoughapps do present media that is worthy of impression tracking, priortechniques that use cookie-based approaches for tracking such mediaimpressions are unusable in the app environment context.

In view of the foregoing, an audience measurement company would like toleverage the existing databases of database proprietors to collect moreextensive Internet usage and demographic data and/or user data forassociating with media impressions tracked on devices (e.g.,smartphones, tablets, etc.) that execute apps that do not employ cookiesused in web browsers. However, the audience measurement entity is facedwith several problems in accomplishing this end. For example, a problemis presented as to how to access the data of the database proprietorswithout compromising the privacy of the subscribers, the panelists, orthe proprietors of the tracked media. Another problem is how to accessthis data given the technical restrictions imposed by app softwareplatforms of mobile devices that do not employ cookies.

Example methods, apparatus and/or articles of manufacture disclosedherein enable tracking media impressions for media presented by mobiledevice apps that execute on mobile devices, without needing to rely oncookies to track such media impressions. In this manner, an audiencemeasurement entity (AME) can track media impressions on mobile devicesthat do not accept cookies. Apps that do not employ cookies have higherusage rates than web browsers that do employ cookies on some suchdevices. Examples disclosed herein also protect privacies of users byencrypting identification information in such a way thatpersonally-identifying information is not revealed to the audiencemeasurement entity (AME). Examples disclosed herein accomplish this byusing an application campaign rating (ACR) identifier (ID) that includesone or more encrypted device and/or user identifier(s) (i.e.,device/user identifier(s)) retrieved from a mobile device. The one ormore encrypted device/user identifier(s) can then be used to retrieveuser information for a user of the mobile device by sending the one ormore encrypted device/user identifier(s) to one or more correspondingdatabase proprietors that store user information for its registeredusers. In the illustrated examples, to protect users' privacies, the AMEdoes not have keys to decrypt the encrypted device/user identifiers, andeach database proprietor has only its respective key(s) useable todecrypt only device/user identifier(s) pertaining to its services (e.g.,wireless carrier services, social networking services, email services,mobile phone ecosystem app or media services, etc.). In this manner,personally-identifying information for particular services will not berevealed to the AME or to just any database proprietor, but only to thedatabase proprietor that provides the particular service.

In examples disclosed herein, when an audience measurement entityreceives an ACR ID including one or more encrypted device/useridentifier(s), the audience measurement entity requests user informationfrom one or more partnered database proprietors for the encrypteddevice/user identifier(s). In this manner, the partnered databaseproprietor(s) can provide user information to the audience measuremententity for the encrypted device/user identifier(s), to facilitateassociating the user information with one or more media ID's of mediapresented by app(s) on one or more mobile device(s). Because theidentification of users or client mobile devices is done with referenceto enormous databases of users far beyond the quantity of personspresent in a conventional audience measurement panel, the data developedfrom this process is extremely accurate, reliable and detailed.

In some examples, by agreeing to participate in concerted audiencemeasurement efforts, the partnered database proprietors are providedwith audience user information and impression information collected byother partnered database proprietors. In this manner, partnered databaseproprietors can supplement their own audience impression metrics withinformation provided by other partnered database proprietors.

Example methods, apparatus, and articles of manufacture disclosed hereincan be used to determine media impressions (e.g., content impressions,and/or advertisement impressions), using user information, which isdistributed across different databases (e.g., different website owners,service providers, etc.) on the Internet and impression data. Not onlydo example methods, apparatus, and articles of manufacture disclosedherein enable more accurate correlation of Internet media impressions touser demographic information, but they also effectively extend panelsizes and compositions beyond persons participating in the panel of anaudience measurement entity and/or a ratings entity to personsregistered in other Internet databases such as the databases of wirelessservice carriers, mobile software/service providers, social medium sites(e.g., Facebook, Twitter, Google, etc.), and/or any other Internet sitessuch as Yahoo!, MSN, Apple iTunes, Experian, etc. This extensioneffectively leverages the media impression tracking capabilities of theaudience measurement entity and the use of databases of non-AME entitiessuch as social media and/or other websites to create an enormous,demographically accurate panel that results in accurate, reliablemeasurements of impressions to Internet media such as advertising and/orprogramming.

Traditionally, audience measurement entities (also referred to herein as“ratings entities”) determine demographic reach for advertising andmedia programming based on registered panel members. That is, anaudience measurement entity enrolls people that consent to beingmonitored into a panel. During enrollment, the audience measuremententity receives demographic information from the enrolling people sothat subsequent correlations may be made between advertisement/mediaimpressions to those panelists and different demographic markets. Unliketraditional techniques in which audience measurement entities relysolely on their own panel member data to collect demographics-basedaudience measurement, example methods, apparatus, and/or articles ofmanufacture disclosed herein enable an audience measurement entity toshare demographic information with other entities that operate based onuser registration models. As used herein, a user registration model is amodel in which users subscribe to services of those entities by creatingan account and providing demographic-related information aboutthemselves. Sharing of demographic information associated withregistered users of database proprietors enables an audience measuremententity to extend or supplement their panel data with substantiallyreliable demographics information from external sources (e.g., databaseproprietors), thus extending the coverage, accuracy, and/or completenessof their demographics-based audience measurements. Such access alsoenables the audience measurement entity to monitor persons who would nototherwise have joined an audience measurement panel. Any entity having adatabase identifying demographics of a set of individuals may cooperatewith the audience measurement entity. Such entities may be referred toas “database proprietors” and include entities such as wireless servicecarriers, mobile software/service providers, social medium sites (e.g.,Facebook, Twitter, Google, etc.), and/or any other Internet sites suchas Yahoo!, MSN, Apple iTunes, Experian, etc.

Example methods, apparatus, and/or articles of manufacture disclosedherein may be implemented by an audience measurement entity (e.g., anyentity interested in measuring or tracking audience impressions toadvertisements, content, and/or any other media or Internet resources)in cooperation with any number of database proprietors such as onlineweb services providers to develop online media impression metrics. Suchdatabase proprietors/online web services providers may be wirelessservice carriers, mobile software/service providers, social networksites (e.g., Facebook, Twitter, MySpace, etc.), multi-service sites(e.g., Yahoo!, Google, Experian, etc.), online retailer sites (e.g.,Amazon.com, Buy.com, etc.), and/or any other web service(s) site thatmaintains user registration records.

In some examples, to increase the likelihood that measured viewership isaccurately attributed to the correct demographics, example methods,apparatus, and/or articles of manufacture disclosed herein use userinformation located in the audience measurement entity's records as wellas user information located at one or more database proprietors (e.g.,web service providers) that maintain records or profiles of users havingaccounts therewith. In this manner, example methods, apparatus, and/orarticles of manufacture disclosed herein may be used to supplement userinformation maintained by a ratings entity (e.g., an audiencemeasurement company such as The Nielsen Company of Schaumburg, Ill.,United States of America, that collects media impression measurements,demographics, and/or other user information) with user information fromone or more different database proprietors (e.g., web serviceproviders).

The use of demographic information from disparate data sources (e.g.,high-quality demographic information from the panels of an audiencemeasurement company and/or registered user data of web serviceproviders) results in improved reporting effectiveness of metrics forboth online and offline advertising campaigns. Example techniquesdisclosed herein use online registration data to identify demographicsof users, and/or other user information, and use server impressioncounts, and/or other techniques to track quantities of impressionsattributable to those users. Online web service providers such aswireless service carriers, mobile software/service providers, socialnetwork sites (e.g., Facebook, Twitter, MySpace, etc.), multi-servicesites (e.g., Yahoo!, Google, Experian, etc.), online retailer sites(e.g., Amazon.com, Buy.com, etc.), etc. (collectively and individuallyreferred to herein as online database proprietors) maintain detaileddemographic information (e.g., age, gender, geographic location, race,income level, education level, religion, etc.) collected via userregistration processes. As used herein, an impression is defined to bean event in which a home or individual is exposed to the correspondingmedia (e.g., content and/or advertisement). Thus, an impressionrepresents a home or an individual having been exposed to media (e.g.,an advertisement, content, a group of advertisements and/or a collectionof content). In Internet advertising, a quantity of impressions orimpression count is the total number of times media (e.g., anadvertisement or advertisement campaign) has been accessed by a webpopulation (e.g., the number of times the media is accessed as decreasedby, for example, pop-up blockers and/or increased by, for example,retrieval from local cache memory). As used herein, a demographicimpression is defined to be an impression that is associated with acharacteristic (e.g., a demographic characteristic) of the personexposed to the media.

Example methods and apparatus disclosed herein collect locationinformation of mobile device users, such as visits to a merchantlocation or other purchasing-related location. Using a mobile deviceidentifier and/or a user identifier, example methods and apparatusdisclosed herein map the location information for the mobile device userto advertisement impressions of that user on the mobile device. Examplemethods and apparatus disclosed herein may therefore be used to link adexposure of a mobile device user to the user's purchasing behavior at,for example, physical storage (e.g., retailers, wholesalers, shoppingclubs, etc.) to more accurately measure advertisement effectiveness.

In some examples, when a user physically visits, for instance, aphysical store, a mobile device carried by the user is identified by thestore proprietor (e.g., a physical store database proprietor) at thegeographic location of the store. The physical store database proprietorcollects device/user identifier(s) from persons who physically enter thestore. For example, the retailer may collect one or more of a MACaddress used for wireless communications by the mobile device, a deviceidentifier of the mobile device, and/or a user identifier associatedwith the mobile device. The example audience measurement entity providesencrypted device/user identifier(s) to the example physical storedatabase proprietor, which decrypts the encrypted device/useridentifier(s) and identifies the user information in its database (e.g.,based on frequent shopper card, loyalty card, and/or other registrationdata). The example physical store database proprietor then returns theuser information to the AME. The example AME matches the userinformation to relevant mobile device impressions (e.g., a mediaidentifier) to associate the mobile device impressions with visits tothe physical store location. Thus, the example AME may measure theeffectiveness of an advertisement at driving consumer purchasing orotherwise influencing consumer behavior by mapping media impressionevents to actual physical store visits.

Example methods and apparatus disclosed herein collect location-basedmedia impression information in a manner similar to the collection ofmerchant location information and/or user behavior. In some examples, acollection interface is associated with a location-based media display(e.g., a billboard, an indoor or outdoor display, etc.). When a usercarrying a mobile device enters an area associated with exposure to themedia display, the example collection interface collects communicationsfrom the mobile device and extracts one or more unique deviceidentifiers and/or user identifiers from the communications. Examplemethods and apparatus collect media impression information from adatabase proprietor that collects the mobile device information inassociation with the media display. Example methods and apparatusprovide the media impression information to an audience measuremententity, which combines the media impression information with other mediaimpression information for the same users by matching, for example,application campaign rating identifiers or other unique device and/oruser identifiers. In some examples, the database proprietor iseliminated and the displayed is monitored directly by the AME.

FIG. 1 depicts an example system 100 to collect user information (e.g.,user information 102 a and 102 b) from distributed database proprietors104 a and 104 b for associating with impressions of media presented at amobile device 106. In the illustrated example, user information or userdata includes one or more of demographic data, purchase data, and/orother data indicative of user activities, behaviors, and/or preferencesrelated to information accessed via the Internet, purchases, mediaaccessed on electronic devices, physical locations (e.g., stores orother commercial establishments (e.g., retailers, wholesalers, specialtystores, and/or shopping clubs), restaurants, venues, etc.) visited byusers, etc. Examples disclosed herein are described in connection with amobile device, which may be a mobile phone, a mobile communicationdevice, a tablet, a gaming device, a portable media presentation device,an MP3 player, an AC3 player, etc. However, examples disclosed hereinmay additionally or alternatively be implemented in connection withnon-mobile devices such as internet appliances, smart televisions,internet terminals, computers, or any other device capable of presentingmedia received via network communications.

In the illustrated example of FIG. 1 , to track media impressions on themobile device 106, an audience measurement entity (AME) 108 partnerswith or cooperates with an app publisher 110 to download and install adata collector 112 on the mobile device 106. The app publisher 110 ofthe illustrated example may be a software app developer that developsand distributes apps to mobile devices and/or a distributor thatreceives apps from software app developers and distributes the apps tomobile devices. In the illustrated example, to download and install thedata collector 112 on the mobile device 106, the app publisher 110downloads an app install package 114 to the mobile device 106 when themobile device 106 requests a purchased or free app program 116. The apppublisher 110 locates the requested app program 116 and the datacollector 112 in the app install package 114. The app install package114 is sent to the mobile device 106 for installing the app program 116and the data collector 112. In some examples, the app publisher 110first obtains the consent of a user of the mobile device 106 toparticipate in a media tracking program before sending the datacollector 112 for installation on the mobile device 106.

In the illustrated example, the app program 116 is a game entitled“Angry Bats” that presents media 118 received from a media publisher120. The media 118 may be an advertisement, video, audio, text, agraphic, a web page, news, educational media, entertainment media,and/or any other type of media. In the illustrated example, a media ID122 is provided in the media 118 to enable identifying the media 118 sothat the AME 108 can credit the media 118 with media impressions whenthe media 118 is presented on the mobile device 106 and/or on any otherdevice that is monitored by the AME 108.

In the illustrated example, the AME 108 provides the data collector 112to the app publisher 110 for packaging with the app program 116 in theapp install package 114. In some examples, the app publisher 110provides the data collector 112 as a program separate from the appprogram 116. In other examples, the app publisher 110 compiles orotherwise includes the data collector 112 in the app program 116 ratherthan installing the data collector 112 as a program separate from theapp program 116. An example manner of distributing data collectorsacross multiple apps and authorizing monitoring across the same with oneauthorization consent identifier is described in U.S. patent applicationSer. No. 13/828,971, which is hereby incorporated by reference in itsentirety. The data collector 112 of the illustrated example includesinstructions (e.g., Java, java script, or any other computer language orscript) that, when executed by the mobile device 106, cause the mobiledevice 106 to collect the media ID 122 of the media 118 presented by theapp program 116 and/or the mobile device 106, and to collect one or moredevice/user identifier(s) 124 stored in the mobile device 106. Thedevice/user identifier(s) 124 of the illustrated example includeidentifiers that can be used by corresponding ones of the partnerdatabase proprietors 104 a-b to identify the user or users of the mobiledevice 106, and to locate user information 102 a-b corresponding to theuser(s). For example, the device/user identifier(s) 124 may includehardware identifiers (e.g., an international mobile equipment identity(IMEI), a mobile equipment identifier (MEID), a media access control(MAC) address, etc.), an app store identifier (e.g., a Google AndroidID, an Apple ID, an Amazon ID, etc.), an open source unique deviceidentifier (OpenUDID), an open device identification number (ODIN), alogin identifier (e.g., a username), an email address, user agent data(e.g., application type, operating system, software vendor, softwarerevision, etc.), third-party service identifiers (e.g., advertisingservice identifiers, device usage analytics service identifiers,demographics collection service identifiers), etc. In some examples,fewer or more device/user identifier(s) 124 may be used. In addition,although only two partner database proprietors 104 a-b are shown in FIG.1 , the AME 108 may partner with any number (e.g., 1, 2, 3, 4, or more)of partner database proprietors to collect distributed user information(e.g., the user information 102 a-b).

In some examples, the types of device/user identifiers 124 are differentfrom device to device depending on the type of device, the manufacturerof the device, the software installed on the device, etc. For example, amobile device having cellular 2G, 3G, and/or 4G capabilities will havean assigned IMEI number. However, a mobile device capable of Wi-Fi, butnot having cellular communication capabilities, will not have an IMEInumber. As such, one or more other parameter(s) of the Wi-Fi mobiledevice may be used as the device/user identifiers 124. Such otherparameters may include, for example, a MAC address, a login ID, and/orany other identifier or information available to the Wi-Fi capabledevice and that is not specific to cellular communications.

By being able to select or access multiple different types ofdevice/user identifiers 124, the AME 108 increases the opportunities forcollecting corresponding user information. For example, the AME 108 isnot tied to requesting user information from a single source (e.g., onlyone of the partner database proprietors 104 a-b). Instead, the AME 108can leverage relationships with multiple partner database proprietors(e.g., the partner database proprietors 104 a-b). If one or some partnerdatabase proprietors are unable or become unwilling to share user data,the AME 108 can request the user data from one or more other partnerdatabase proprietor(s).

In some examples, the mobile device 106 may not allow access toidentification information stored in the mobile device 106. For suchinstances, the disclosed examples enable the AME 108 to store anAME-provided identifier (e.g., an identifier managed and tracked by theAME 108) in the mobile device 106 to track media impressions on themobile device 106. For example, the AME 108 may provide instructions inthe data collector 112 to set an AME-provided identifier in memory spaceaccessible by and/or allocated to the app program 116, and the datacollector 112 uses the identifier as a device/user identifier 124. Insuch examples, the AME-provided identifier set by the data collector 112persists in the memory space even when the app program 116 and the datacollector 112 are not running. In this manner, the same AME-providedidentifier can remain associated with the mobile device 106 for extendeddurations. In some examples in which the data collector 112 sets anidentifier in the mobile device 106, the AME 108 may recruit a user ofthe mobile device 106 as a panelist, and may store user informationcollected from the user during a panelist registration process and/orcollected by monitoring user activities/behavior via the mobile device106 and/or any other device used by the user and monitored by the AME108. In this manner, the AME 108 can associate user information (frompanelist data stored by the AME 108) with media impressions attributedto the user on the mobile device 106 to develop media demographicimpression data.

In the illustrated example, the data collector 112 sends the media ID122 and the one or more device/user identifier(s) 124 as collected data126 to the app publisher 110. Additionally or alternatively, the datacollector 112 may be configured to send the collected data 126 to theAME and/or to another collection entity (other than the app publisher110) that has been contracted by the AME 108 or is partnered with theAME 108 to collect media ID's (e.g., the media ID 122) and device/useridentifiers (e.g., the device/user identifier(s) 124) from mobiledevices (e.g., the mobile device 106). In the illustrated example, theapp publisher 110 (or a collection entity) generates an ACR ID 128 thatincludes the device/user identifier(s) 124, and the app publisher (or acollection entity) sends the media ID 122 and the ACR ID 128 asimpression data 130 to a server 132 at the AME 108. The impression data130 of the illustrated example may include one media ID 122 and one ACRID 128 to report a single impression of the media 118, or it may includenumerous media ID's and ACR ID's based on numerous instances ofcollected data (e.g., the collected data 126) received from the mobiledevice 106 and/or other mobile devices to report multiple impressions ofone or more instances of media. In the illustrated example, the server132 of the illustrated example stores the impression data 130 in an AMEmedia impressions store 134 (e.g., a database or other data structure).Subsequently, the AME 108 sends the device/user identifier(s) 124 fromthe ACR ID 128 to corresponding partner database proprietors (e.g., thepartner database proprietors 104 a-b) to receive user information (e.g.,the user information 102 a-b) corresponding to the device/useridentifier(s) 124 from the partner database proprietors so that the AME108 can associate the user information with corresponding exposure tomedia (e.g., the media 118) presented at mobile devices (e.g., themobile device 106).

Although the above description describes the app publisher 110 (or othercollection entity) as generating the ACR ID 128, in other examples, thedata collector 112 at the mobile device 106 generates the ACR ID 128that includes the device/user identifier(s) 124. In such examples, thedata collector 112 sends the ACR ID 128 to the app publisher 110 (orother collection entity) in the collected data 126.

In the illustrated example, to protect the privacy of the user of themobile device 106, the device/user identifier(s) 124 is/are encryptedbefore sending it/them to the AME 108 in the ACR ID 128. In theillustrated examples, the encryption process is performed so thatneither the app publisher (110) (or other collection entity) nor the AME108, or any other intermediate entity, can access the device/useridentifier(s) 124 before they are sent to corresponding partner databaseproprietors (e.g., the partner database proprietors 104 a-b). To encryptthe device/user identifier(s) 124, each partner database proprietor(e.g., the partner database proprietors 104 a-b) for whichidentification information can be retrieved from the mobile device 106is provided with one or more encryption keys specific to that partnerdatabase proprietor. In this manner, each partner database proprietorhas a different set of keys so that each partner database proprietor canonly recover one or more of the device/user identifier(s) 124 thatpertain(s) to it. For example, a wireless service carrier can onlyretrieve an IMEI or MEID number, a social network site can only retrievea login username and/or password corresponding to its social networkservices, etc. Copies of the one or more encryption keys can be providedto the app publisher 110 in an encryption algorithm (e.g., an SSH-1encryption algorithm). In the illustrated example, the AME 108 providesthe encryption algorithm and the encryption keys to the app publisher110 as an encryption software package or bundle (e.g., an encryptor 202of FIG. 2 ) from which the app publisher 110 cannot recover or extractthe encryption keys. In this manner, the app publisher 110 is not ableto access the device/user identifier(s) 124. In other examples, the apppublisher 110 is able to access the device/user identifier(s) 124 ifauthorized by a user of the mobile device 106 (e.g., during installationof the app program 116). In such examples, the app publisher 110 maystill encrypt the device/user identifier(s) 124 before sending them tothe AME 108.

In the illustrated examples, the encryption algorithm is also providedwith partner database proprietor identifiers along with correspondingones of the encryption keys for each of the partner database proprietors(e.g., the partner database proprietors 104 a-b). When encrypting thedevice/user identifier(s) 124, the encryption algorithm can append,prepend, concatenate, or otherwise associate corresponding partnerdatabase proprietor identifiers (e.g., an alphanumeric code such as FB1for Facebook) to and/or with the encrypted device/user identifier(s)(e.g., encrypted device/user identifier(s) 208 a-b of FIG. 2 ). Thepartner database proprietor identifiers are not encrypted, such that theAME 108 can access the partner database proprietor identifiers, withoutdecrypting the encrypted device/user identifier(s), to thereby identifywhich of the encrypted device/user identifier(s) corresponds to whichpartner database proprietor. In this manner, the AME 108 can deliver theencrypted device/user identifier(s) to corresponding partner databaseproprietor(s) even though the AME 108 cannot decrypt the device/useridentifier(s) 124.

In some examples, the app publisher 110 can run the encryption softwareat one of its servers or computers that receives the collected data 126from the mobile device 106. In such examples, the media ID 122 and thedevice/user identifier(s) 124 are sent by the mobile device 106 as thecollected data 126 via a secure connection between the encryptionsoftware running at the app publisher 110 and the mobile device 106. Inthis manner, the device/user identifier(s) 124 is/are not accessed bythe app publisher 110 before they are encrypted using the encryptionkeys corresponding to the different database proprietors.

In other examples, the encryption software to encrypt the device/useridentifier(s) 124 is provided in the data collector 112 so that the datacollector 112 encrypts the device/user identifier(s) 124 at the mobiledevice 106 before sending encrypted device/user identifier(s) to the apppublisher 110 (or the AME 108 or other collection entity). In someexamples in which the data collector 112 encrypts the device/useridentifier(s) 124, the data collector 112 also encodes the encrypteddevice/user identifier(s) into an ACR ID (e.g., the ACR ID 128). In suchexamples, the data collector 112 sends the ACR ID 128 and the media ID122 to the app publisher 110 (or other collection entity) in thecollected data 126. The example data collector 112 sends the encrypteddevice/user identifier(s) to the app publisher 110 (or other collectionentity) based on an unencrypted partner database proprietor identifierassociated with the encrypted device/user identifier(s).

After the AME 108 receives the ACR ID 128 including the device/useridentifier(s) 124 in encrypted format, the AME 108 sends encrypteddevice/user identifier logs 136 a-b to corresponding partner databaseproprietors (e.g., the partner database proprietors 104 a-b identifiedvia respective unencrypted partner database proprietor identifiers). Inthe illustrated example, each of the encrypted device/user identifierlogs 136 a-b may include a single encrypted device/user identifier, orit may include numerous aggregate encrypted device/user identifiersreceived over time from one or more mobile devices. After receiving theencrypted device/user identifier logs 136 a-b, each of the partnerdatabase proprietors 104 a-b decrypts its respective encrypteddevice/user identifiers using its copy(ies) of the encryption key(s).The partner database proprietors 104 a-b then look up their userscorresponding to the decrypted device/user identifiers, and collectcorresponding user information 102 a-b for those users for sending tothe AME 108. For example, if the partner database proprietor 104 a is awireless service provider, the encrypted device/user identifier log 136a includes IMEI numbers, and the wireless service provider accesses itssubscriber records to find users having IMEI numbers matching the IMEInumbers received in the encrypted device/user identifier log 136 a. Whenthe users are identified, the wireless service provider copies theusers' user information to the user information 102 a for delivery tothe AME 108.

FIG. 9 depicts another example system 900 to collect user information(e.g., the user information 102 a and 102 b) from distributed databaseproprietors 104 a and 104 b for associating with exposure to mediapresented at the mobile device 106 to generate media demographicimpression data. In the illustrated example of FIG. 9 , like referencenumbers are used to refer to the same or similar components as describedabove in connection with FIG. 1 . In the illustrated example of FIG. 9 ,a data collector 912 is shown as being located in the app program 116.For example, the data collector 912 may include instructions coded inthe app program 116 to collect data in the mobile device 106.Alternatively, the data collector 912 may be a separate programdownloaded separate from the app program 116 as part of the app installpackage 114 from the app publisher 110.

In the illustrated example of FIG. 9 , the data collector 912 isconfigured to collect the device/user identifier(s) 124 from the mobiledevice 106. The example data collector 912 sends the device/useridentifier(s) 124 to the app publisher 110 in the collected data 126,and it also sends the device/user identifier(s) 124 to the mediapublisher 120. The data collector 912 of the illustrated example doesnot collect the media ID 122 from the media 118 at the mobile device 106as the data collector 112 does in the example system 100 of FIG. 1 .Instead, the media publisher 120 that publishes the media 118 to themobile device 106 retrieves the media ID 122 from the media 118 that itpublishes. The media publisher 120 then associates the media ID 122 tothe device/user identifier(s) 124 of the mobile device 106, and sendscollected data 902 to the app publisher 110 that includes the media ID122 and the associated device/user identifier(s) 124 of the mobiledevice 106. For example, when the media publisher 120 sends the media118 to the mobile device 106, it does so by identifying the mobiledevice 106 as a destination device for the media 118 using one or moreof the device/user identifier(s) 124. In this manner, the mediapublisher 120 can associate the media ID 122 of the media 118 with thedevice/user identifier(s) 124 of the mobile device 106 indicating thatthe media 118 was sent to the particular mobile device 106 forpresentation (e.g., to generate an impression of the media 118).

In the illustrated example, the app publisher 110 matches thedevice/user identifier(s) 124 from the collected data 902 to thedevice/user identifier(s) 124 from the collected data 126 to determinethat the media ID 122 corresponds to media (e.g., the media 118)presented on the mobile device 106 associated with the device/useridentifier(s) 124. The app publisher 110 of the illustrated example alsogenerates an ACR ID 128 based on the device/user identifier(s) 124 asdisclosed herein. The app publisher 110 then sends the impression data130, including the media ID 122 and the associated ACR ID 128, to theAME 108. The AME 108 can then send the encrypted device/user identifierlogs 136 a-b to the partner database proprietors 104 a-b to request theuser information 102 a-b as described above in connection with FIG. 1 .

FIG. 10 depicts yet another example system 1000 to collect userinformation (e.g., the user information 102 a and 102 b) fromdistributed database proprietors 104 a and 104 b for associating withimpressions of media presented at the mobile device 106. In theillustrated example of FIG. 10 , like reference numbers are used torefer to the same or similar components as described above in connectionwith FIG. 1 . In the illustrated example of FIG. 10 , a data collector1012 is shown as being located in the app program 116. For example, thedata collector 1012 may include instructions coded in the app program116 to collect data in the mobile device 106. Alternatively, the datacollector 1012 may be a separate program downloaded separately from theapp program 116 as part of the app install package 114 from the apppublisher 110.

In the illustrated example of FIG. 10 , the data collector 1012 isconfigured to collect the device/user identifier(s) 124 from the mobiledevice 106. The example data collector 1012 sends the device/useridentifier(s) 124 to the media publisher 120. The data collector 1012 ofthe illustrated example does not collect the media ID 122 from the media118 at the mobile device 106 as the data collector 112 does in theexample system 100 of FIG. 1 . Instead, the media publisher 120 thatpublishes the media 118 to the mobile device 106 retrieves the media ID122 from the media 118 that it publishes. The media publisher 120 thenassociates the media ID 122 to the device/user identifier(s) 124 of themobile device 106, and generates the ACR ID 128 based on the device/useridentifier(s) 124 as disclosed herein. The media publisher 120 thensends the media impression data 130, including the media ID 122 and theACR ID 128, to the AME 108. For example, when the media publisher 120sends the media 118 to the mobile device 106, it does so by identifyingthe mobile device 106 as a destination device for the media 118 usingone or more of the device/user identifier(s) 124. In this manner, themedia publisher 120 can associate the media ID 122 of the media 118 withthe device/user identifier(s) 124 and the ACR ID 128 of the mobiledevice 106 indicating that the media 118 was sent to the particularmobile device 106 for presentation (e.g., to generate an impression ofthe media 118). In the illustrated example, after the AME 108 receivesthe impression data 130 from the media publisher 120, the AME 108 canthen send the encrypted device/user identifier logs 136 a-b to thepartner database proprietors 104 a-b to request the user information 102a-b as described above in connection with FIG. 1 .

Although the media publisher 120 is shown separate from the apppublisher 110 in FIGS. 1, 9, and 10 , the app publisher 110 mayimplement at least some of the operations of the media publisher 120 tosend the media 118 to the mobile device 106 for presentation. Forexample, advertisement, content, or other media providers may send media(e.g., the media 118) to the app publisher 110 for publishing to themobile device 106 via, for example, the app program 116 when it isexecuting on the mobile device 106. In such examples, the app publisher110 implements the operations described above as being performed by themedia publisher 120.

In some examples, the media publisher 120 operates as a third-partymedia publisher relative to other traditional media publishers. In suchexamples, the media publisher 120 receives media from media providersand/or other traditional media publishers for publishing to electronicdevices (e.g., the mobile device 106) while tracking media impressionsof the published media (e.g., the media 118) and/or identities ofdevices to which media is published. That is, in addition to performingtraditional media publisher services of publishing media to electronicdevices, the media publisher 120 of the illustrated example additionallycollects media impression tracking information as discussed above inconnection with FIGS. 9 and 10 . Thus, in some examples, the mediapublisher 120 is a third party that is contracted by traditional mediapublishers to provide media impression tracking capabilities forcollecting media impressions and user information (e.g., the userinformation 102 a-b) as disclosed herein.

In addition to associating user information (e.g., the user information102 a-b) with media IDs (e.g., the media ID 122) of published media,examples disclosed herein may additionally or alternatively be used toassociate user information with other types of information collectedfrom mobile devices representative of user interests and/or userbehaviors. For example, techniques disclosed herein may also be used tomonitor search terms provided by users at mobile devices, andassociating those search terms with user information of users thatprovide the search terms. Example search terms may be provided via appsdownloaded and installed on mobile devices, for searching information onthe Internet and/or products at stores, websites, etc. Example systemsthat may be used to monitor search terms are described below inconnection with FIGS. 12-14 . In the illustrated examples of FIGS. 12-14, like reference numbers are used to refer to the same or similarcomponents as described above in connection with FIG. 1 .

FIG. 12 is an example system 1200 to collect user information (e.g., theuser information 102 a and 102 b) from distributed database proprietors104 a-b for associating with search terms (e.g., search terms 1210)provided by users at mobile devices (e.g., the mobile device 106). Inthe illustrated example of FIG. 12 , a data collector 1206 is shown asbeing located in an app program 1204 downloaded to the mobile device 106in an app install package 1202 from the app publisher 110. For example,the data collector 1206 may include instructions coded in the appprogram 1204 to collect data in the mobile device 106. Alternatively,the data collector 1206 may be a separate program downloaded separatelyfrom the app program 1204 as part of the app install package 1202 fromthe app publisher 110.

In the illustrated example of FIG. 12 , the app program 1204 providessearch functionality so that users may search, for example, informationon the Internet, products, services, etc. For example, when executing onthe mobile device 106, the app program 1204 provides a search field 1208for entering a search string including one or more search term(s) 1210.To provide the search functionality, the app program 1204 of theillustrated example sends the search term(s) 1210 to a search serviceprovider 1212. In this manner, the search service provider 1212 canperform the requested search, and return search results to the appprogram 1204 at the mobile device 106. In the illustrated example, thesearch service provider 1212 may be an Internet search engine (e.g.,Google, Yahoo!, Bing, etc.), an Internet portal website, a merchant, astore proprietor, a retailer, etc.

When a user provides the search term(s) 1210 in the search field 1208,the data collector 1206 sends the search term(s) 1210, and thedevice/user identifier(s) 124 to the app publisher 110 as collected data1214. The app publisher 110 can then generate the ACR ID 128 based onthe device/user identifier(s) 124 using example techniques disclosedherein, and send the search term(s) 1210 and the ACR ID 128 to the AME108 as user-interest data 1216. In other examples, the data collector1206 may be configured to send the search term(s) 1210 and the ACR ID128 (or the device/user identifier(s) 124) as the user-interest data1216 directly to the AME 108. The AME 108 can then send the encrypteddevice/user identifier logs 136 a-b to the partner database proprietors104 a-b to request the user information 102 a-b as described above inconnection with FIG. 1 .

FIG. 13 depicts another example system 1300 to collect user information(e.g., the user information 102 a and 102 b) from distributed databaseproprietors 104 a-b for associating with search terms (e.g., the searchterm(s) 1210) provided by users at mobile devices. In the illustratedexample of FIG. 13 , a data collector 1312 is shown as being located inthe app program 1204. For example, the data collector 1312 may includeinstructions coded in the app program 1204 to collect data in the mobiledevice 106. Alternatively, the data collector 1312 may be a separateprogram downloaded separate from the app program 1204 as part of the appinstall package 1202 from the app publisher 110.

In the illustrated example of FIG. 13 , the data collector 1312 isconfigured to collect the device/user identifier(s) 124 from the mobiledevice 106. The example data collector 1312 sends the device/useridentifier(s) 124 to the app publisher 110 in the collected data 1214,and it also sends the device/user identifier(s) 124 to the searchprovider 1212. The data collector 1312 of the illustrated example doesnot collect the search terms 1210 from the search field 1208 at themobile device 106 as the data collector 1206 does in the example system1200 of FIG. 12 . Instead, the search provider 1212 collects the searchterm(s) 1210 when received from the app program 1204. The searchprovider 1212 then associates the search term(s) 1210 with thedevice/user identifier(s) 124 of the mobile device 106, and sendscollected data 1302 to the app publisher 110 that includes the searchterm(s) 1210 and the associated device/user identifier(s) 124 of themobile device 106. For example, when the search provider 1212 providesservices to the mobile device 106, it does so by identifying the mobiledevice 106 using one or more of the device/user identifier(s) 124. Inthis manner, the search provider 1212 can associate the search term(s)1210 with the device/user identifier(s) 124 of the mobile device 106indicating which searches are performed for the particular mobile device106.

In the illustrated example, the app publisher 110 matches thedevice/user identifier(s) 124 from the collected data 1302 to thedevice/user identifier(s) 124 from the collected data 126 to determinethat the search term(s) 1210 correspond to a search provided for themobile device 106 associated with the device/user identifier(s) 124. Theapp publisher 110 of the illustrated example also generates an ACR ID128 based on the device/user identifier(s) 124 as disclosed herein. Theapp publisher 110 then sends the user-interest data 1216, including thesearch term(s) 1210 and the associated ACR ID 128, to the AME 108. TheAME 108 can then send the encrypted device/user identifier logs 136 a-bto the partner database proprietors 104 a-b to request the userinformation 102 a-b as described above in connection with FIG. 1 .

FIG. 14 depicts yet another example system 1400 to collect userinformation (e.g., the user information 102 a and 102 b) fromdistributed database proprietors 104 a and 104 b for associating withthe search term(s) 1210 provided at the mobile device 106. In theillustrated example of FIG. 14 , a data collector 1412 is shown as beinglocated in the app program 1204. For example, the data collector 1412may include instructions coded in the app program 1204 to collect datain the mobile device 106. Alternatively, the data collector 1412 may bea separate program downloaded separate from the app program 1204 as partof the app install package 1202 from the app publisher 110.

In the illustrated example of FIG. 14 , the data collector 1412 isconfigured to collect the device/user identifier(s) 124 from the mobiledevice 106. The example data collector 1412 sends the device/useridentifier(s) 124 to the search provider 1212. The data collector 1412of the illustrated example does not collect the search term(s) 1210 fromthe search field 1208 at the mobile device 106 as the data collector1206 does in the example system 1200 of FIG. 12 . Instead, the searchprovider 1212 retrieves the search term(s) 1210 when received from theapp program 1205 executing on the mobile device 106. The search provider1212 then associates the search term(s) 1210 to the device/useridentifier(s) 124 of the mobile device 106, and generates the ACR ID 128based on the device/user identifier(s) 124 as disclosed herein. Thesearch provider 1212 then sends the user-interest data 1216, includingthe search term(s) 1210 and the ACR ID 128, to the AME 108. For example,when the search provider 1212 provides search services to the mobiledevice 106, it does so by identifying the mobile device 106 using one ormore of the device/user identifier(s) 124. In this manner, the searchprovider 1212 can associate the search term(s) 1210 with the device/useridentifier(s) 124 and the ACR ID 128 of the mobile device 106 indicatingthat the search was performed for the particular mobile device 106. Inother examples, the data collector 1412 at the mobile device 106 may beconfigured to send the search term(s) 1210 and the ACR ID 128 (or thedevice/user identifier(s) 124) as the user-interest data 1216 directlyto the AME 108. In the illustrated example, after the AME 108 receivesthe user-interest data 1216 from the search provider 1212 (or from themobile device 106), the AME 108 can then send the encrypted device/useridentifier logs 136 a-b to the partner database proprietors 104 a-b torequest the user information 102 a-b as described above in connectionwith FIG. 1 .

Although the search provider 1212 is shown separate from the apppublisher 110 in FIGS. 1, 9, 10, 12, 13, and 14 the app publisher 110may implement at least some operations of the search provider 1212 toreceive the search term(s) 1210 from the mobile device 106. For example,the data collector 1412 may send the search term(s) 1210 to the apppublisher 110 so that the app publisher 110 may forward the searchterm(s) 1210 on to a search provider. In such examples, the apppublisher 110 implements at least some of the operations described aboveas being performed by the search provider 1212.

FIG. 2 depicts an example apparatus 200 having an encryptor 202 toencrypt device and/or user identifiers (e.g., the device/useridentifier(s) 124 of FIG. 1 ), and having an encoder 204 to encode theencrypted device and/or user identifiers into an application campaignrating (ACR) identifier (e.g., the ACR ID 128 of FIGS. 1 , 9, 10, and12-14). The encryptor 202 of the illustrated example is provided withencryption keys and partner database proprietor identifierscorresponding to the different partner database proprietors (e.g.,partner database proprietors 104 a-b of FIGS. 1, 9, 10, and 12-14 ) forwhich device/user identifiers 124 (FIGS. 1, 9, 10, and 12-14 ) can becollected from mobile devices. In the illustrated example, device and/oruser identifiers (e.g., the device/user identifier(s) 124 of FIGS. 1, 9,10, and 12-14 ) include an IMEI/MEID number 124 a, an Android ID 124 b,a MAC address 124 c, an OpenUDID 124 d, an ODIN identifier 124 e, alogin ID 124 f, user agent data 124 g, a third-party 1 ID 124 h, and/ora third-party 2 ID 124 i. In the illustrated examples, the third-party 1ID 124 h and/or the third-party 2 ID 124 i may be identifiers oftargeted advertisement services, web analytics services, services thatcollect and store demographic information of users in association withunique identifiers (e.g., the third-party 1 ID 124 h and/or thethird-party 2 ID 124 i) of those users. The encryptor 202 of theillustrated example uses corresponding encryption keys to encrypt thedevice/user identifiers 124 to corresponding encrypted device/useridentifiers 208 a-i. In addition, the encryptor 202 also provides (e.g.,appends, prepends, or otherwise concatenates) corresponding partnerdatabase proprietor identifiers to corresponding ones of the encrypteddevice/user identifiers 208 a-i so that the AME 108 can identify partnerdatabase proprietors (e.g., the partner database proprietors 104 a-b ofFIGS. 1, 9, 10 , and 12-14) to which it should send corresponding onesof the encrypted device/user identifiers 208 a-i (e.g., the databaseproprietor holding the corresponding key for the encrypted data). Theencoder 204 of the illustrated example encodes the encrypted device/useridentifiers 208 a-i into the ACR ID 128. The ACR ID 128 is then sent tothe AME 108.

The example apparatus 200 may be entirely or partially implemented atthe mobile device 106 (FIGS. 1, 9, 10, and 12-14 ), entirely orpartially implemented at the app publisher 110 (FIGS. 1, 9, 10, and12-14 ) (or other collection entity), and/or entirely or partiallyimplemented at the media publisher 120 (FIGS. 1, 9, and 10 ) (or searchprovider 1212 of FIGS. 12-14 ). In some examples, the encryptor 202 andthe encoder 204 may both be implemented in the mobile device 106, togenerate the ACR ID 128 and send the ACR ID 128 to the app publisher 110(or other collection entity) in the collected data 126 along with themedia ID 122 (and/or the search term(s) 1210). In other examples, theencryptor 202 may be implemented at the mobile device 106, and theencoder 204 may be implemented at the app publisher 110 (or othercollection entity), at the media publisher 120, and/or at the searchprovider 1212. For example, the encryptor 202 may be provided inencryption software downloaded to the mobile device 106 as part of thedata collector 112. In this manner, the encryptor 202 can encrypt thedevice/user identifier(s) 124 at the mobile device 106, and send theencrypted device/user identifier(s) 208 a-i to the app publisher 110 (orother collection entity), to the media publisher 120, and/or to thesearch provider 1212. The encoder 204 can then be used at the apppublisher 110 (or other collection entity), at the media publisher 120,and/or at the search provider 1212 to generate the ACR ID 128 byencoding the encrypted device/user identifier(s) 208 a-i into the ACR ID128, and the app publisher 110 (or other collection entity), the mediapublisher 120, and/or the search provider 1212 sends the ACR ID 128 tothe AME 108 along with the media ID 122 (e.g., as the impression data130 of FIGS. 1, 9, and 10 ) or the search term(s) 1210 (e.g., as theuser-interest data 1216).

In other examples, both of the encryptor 202 and the encoder 204 areimplemented at the app publisher 110 (or other collection entity), atthe media publisher 120, and/or at the search provider 1212. In suchother examples, the app publisher 110 (or other collection entity), themedia publisher 120, and/or the search provider 1212 receive(s) thedevice/user identifier(s) 124 from the mobile device 106. The apppublisher 110 (or other collection entity), the media publisher 120,and/or the search provider 1212 generate(s) the ACR ID 128 to includethe encrypted device/user identifier(s) 208 a-i. The app publisher 110(or other collection entity), the media publisher 120, and/or the searchprovider 1212 can then send the ACR ID 128 to the AME 108 along with themedia ID 122 (e.g., as the impression data 130 of FIGS. 1, 9, and 10 )or the search term(s) 1210 (e.g., as the user-interest data 1216 ofFIGS. 12-14 ).

FIG. 3 depicts an example apparatus 300 to decode encrypted deviceand/or user identifiers 208 a-i (FIG. 2 ) from the ACR ID 128 of FIGS.1, 2, 9, 10, 12, 13 , and/or 14, and send one or more of the encrypteddevice and/or user identifiers 208 a-i to corresponding partner databaseproprietors 104 a-e to request user information 102 a-e associated withthe encrypted device and/or user identifiers 208 a-i. The apparatus 300of the illustrated example includes a decoder 302 to decode theencrypted device and/or user identifiers 208 a-i from the ACR ID 128. Inthe illustrated examples, the decoder 302 is implemented at the AME 108of FIG. 1 (e.g., at the server 132 of the AME 108). The decoder 302 ofthe illustrated example determines which of the partner databaseproprietors 104 a-e correspond to which of the encrypted device/useridentifiers 208 a-i based on, for example, partner database proprietoridentifiers provided to the encrypted device/user identifiers 208 a-i bythe encryptor 202 of FIG. 2 . The decoder 302 then sends correspondingones of the encrypted device and/or user identifiers 208 a-i tocorresponding partner database proprietors 104 a-e.

FIG. 4 depicts the example apparatus 300 of FIG. 3 decoding the ACR ID128 in an example in which the ACR ID 128 has some empty fields that donot contain any encrypted device and/or user identifiers. In theillustrated example of FIG. 4 , the decoder 302 decodes the encrypteddevice and/or user identifiers 208 a and 208 h which are located in theACR ID 128, sends the encrypted device and/or user identifier 208 a tothe corresponding partner database proprietor 104 a, and sends theencrypted device and/or user identifier 208 h to the correspondingpartner database proprietor 104 d. Thus, although nine encrypted deviceand/or user identifiers 208 a-i are shown in FIG. 3 , in some examples,fewer (e.g., less than nine) encrypted device and/or user identifiersmay be located in the ACR ID 128 such as in FIG. 4 . In yet otherexamples, more than nine encrypted device and/or user identifiers may beencoded into the ACR ID 128.

FIGS. 5, 6, 7, 11, 15, 17, 18, 22, and 23 are flow diagramsrepresentative of machine readable instructions that may be executed totrack media impressions and/or search terms and collect distributed userinformation for the media impressions and/or search terms using examplesdisclosed herein. In the examples of FIGS. 5, 6, 7, 11, 15, 17, 18, 22,and 23 , operations and processes are shown that represent machinereadable instructions comprising one or more programs for execution byone or more processors such as the processor 812 shown in the examplecomputer 800 discussed below in connection with FIG. 8 . The program(s)may be embodied in software stored on a tangible computer readablemedium such as a CD-ROM, a floppy disk, a hard drive, a digitalversatile disk (DVD), a Blu-ray disk, or a memory associated with theprocessor 812, but the entire program(s) and/or parts thereof couldalternatively be executed by a device other than processor(s) such asthe processor 812 and/or embodied in firmware or dedicated hardware.Further, although the example program(s) is/are disclosed herein withreference to the illustrated examples of FIGS. 5, 6, 7, 11, 15, 17, 18,22, and 23 , many other methods of implementing example disclosed hereinmay alternatively be used. For example, the order of execution of theprocesses and/or operations may be changed, and/or some of the processesand/or operations disclosed herein may be changed, eliminated, orcombined.

As mentioned above, example processes and/or operations of FIGS. 5, 6,7, 11, 15, 17, 18, 22, and 23 may be implemented using codedinstructions (e.g., computer readable instructions) stored on a tangiblecomputer readable medium such as a hard disk drive, a flash memory, aread-only memory (ROM), a compact disk (CD), a digital versatile disk(DVD), a cache, a random-access memory (RAM) and/or any other storagemedia in which information is stored for any duration (e.g., forextended time periods, permanently, brief instances, for temporarilybuffering, and/or for caching of the information). As used herein, theterm tangible computer readable medium is expressly defined to includeany type of computer readable storage and to exclude propagatingsignals. Additionally or alternatively, the example processes and/oroperations of FIGS. 5, 6, 7, 11, 15, 17, 18, 22, and 23 may beimplemented using coded instructions (e.g., computer readableinstructions) stored on a non-transitory computer readable medium suchas a hard disk drive, a flash memory, a read-only memory, a compactdisk, a digital versatile disk, a cache, a random-access memory and/orany other storage media in which information is stored for any duration(e.g., for extended time periods, permanently, brief instances, fortemporarily buffering, and/or for caching of the information). As usedherein, the term non-transitory computer readable medium is expresslydefined to include any type of computer readable medium and to excludepropagating signals. As used herein, when the phrase “at least” is usedas the transition term in a preamble of a claim, it is open-ended in thesame manner as the term “comprising” is open ended. Thus, a claim using“at least” as the transition term in its preamble may include elementsin addition to those expressly recited in the claim.

Flowcharts representative of example machine readable instructions forimplementing the apparatus 300 and/or the apparatus 400 of FIGS. 2, 3 ,and/or 4 are shown in FIGS. 5, 6, 7, 11, 15, 17, 18, 22, and 23 . Inthis example, the machine readable instructions comprise programs forexecution by a processor such as the processor 812 shown in the exampleprocessor platform 800 discussed below in connection with FIG. 8 . Theprograms may be embodied in software stored on a tangible computerreadable storage medium such as a CD-ROM, a floppy disk, a hard drive, adigital versatile disk (DVD), a Blu-ray disk, or a memory associatedwith the processor 812, but the entire programs and/or parts thereofcould alternatively be executed by a device other than the processor 812and/or embodied in firmware or dedicated hardware. Further, although theexample programs are described with reference to the flowchartsillustrated in FIGS. 5, 6, 7, 11, 15, 17, 18, 22, and 23 , many othermethods of implementing the example apparatus 300 and/or the apparatus400 may alternatively be used. For example, the order of execution ofthe blocks may be changed, and/or some of the blocks described may bechanged, eliminated, or combined.

As mentioned above, the example processes of FIGS. 5, 6, 7, 11, 15, 17,18, 22, and 23 may be implemented using coded instructions (e.g.,computer and/or machine readable instructions) stored on a tangiblecomputer readable storage medium such as a hard disk drive, a flashmemory, a read-only memory (ROM), a compact disk (CD), a digitalversatile disk (DVD), a cache, a random-access memory (RAM) and/or anyother storage device or storage disk in which information is stored forany duration (e.g., for extended time periods, permanently, for briefinstances, for temporarily buffering, and/or for caching of theinformation). As used herein, the term tangible computer readablestorage medium is expressly defined to include any type of computerreadable storage device and/or storage disk and to exclude propagatingsignals. As used herein, “tangible computer readable storage medium” and“tangible machine readable storage medium” are used interchangeably.Additionally or alternatively, the example processes of FIGS. 5, 6, 7,11, 15, 17, 18, 22, and 23 may be implemented using coded instructions(e.g., computer and/or machine readable instructions) stored on anon-transitory computer and/or machine readable medium such as a harddisk drive, a flash memory, a read-only memory, a compact disk, adigital versatile disk, a cache, a random-access memory and/or any otherstorage device or storage disk in which information is stored for anyduration (e.g., for extended time periods, permanently, for briefinstances, for temporarily buffering, and/or for caching of theinformation). As used herein, the term non-transitory computer readablemedium is expressly defined to include any type of computer readabledevice or disk and to exclude propagating signals. As used herein, whenthe phrase “at least” is used as the transition term in a preamble of aclaim, it is open-ended in the same manner as the term “comprising” isopen ended.

FIG. 5 is a flow diagram of an example process that may be used tocollect media identifiers (e.g., the media ID 122 of FIG. 1 ) and deviceand/or user identifiers (e.g., the device/user identifiers 124 of FIGS.1 and 2 ) at mobile devices (e.g., the mobile device 106 of FIG. 1 ). Insome examples, instead of or in addition to collecting mediaidentifiers, the example process of FIG. 5 may additionally oralternatively be used to collect search terms (e.g., the search term(s)1210 of FIG. 12 ). In the illustrated example, the example process ofFIG. 5 is performed at the mobile device 106. However, the exampleprocess of FIG. 5 may be performed at any other device.

Initially, the data collector 112 (FIG. 1 ) determines whether it shouldcollect data (block 502). For example, the app program 116 (FIG. 1 ) maytrigger the data collector 112 to collect data when the app program 116presents media (e.g., the media 118 of FIG. 1 ) or receives one or moresearch term(s) (e.g., the search term(s) 1210 of FIGS. 12-14 ). When thedata collector 112 determines at block 502 that it should collect data,the data collector 112 retrieves the media ID 122 from the media 118,and/or the search term(s) 1210 (block 504). The data collector 112 alsocollects one or more of the device/user identifier(s) 124 from themobile device 106 (block 506). The data collector 112 locates the mediaID 122, and/or the search term(s) 1210, and the device/useridentifier(s) 124 in a collected data message (e.g., the collected data126 of FIG. 1 and/or the collected data 1214 of FIG. 12 ) (block 508).The data collector 112 sends the media ID 122, and/or the search term(s)1210, and the device/user identifier(s) 124 to a collection entity(block 510). For example, the data collector 112 sends the media ID 122,and/or the search term(s) 1210, and the device/user identifier(s) 124 asthe collected data 126 (FIG. 1 ) and/or 1214 (FIG. 12 ) to the appspublisher 110 of FIG. 1 . The example process of FIG. 5 then ends.

In some examples in which the encryptor 202 of FIG. 2 is provided in thedata collector 112, the encryptor 202 encrypts the device/useridentifier(s) 124 at block 508 to generate one or more of the encrypteddevice/user identifier(s) 208 a-i of FIG. 2 . In some such examples, thedata collector 112 locates the encrypted device/user identifier(s) 208a-i and the media ID 122, and/or the search term(s) 1210, in thecollected data 126 and/or 1214 at block 508. In some examples in whichthe encoder 204 is also provided in the data collector 112, the encoder204 generates the ACR ID 128 of FIGS. 1-4, 9, 10, 12-14, 16 , and/or 21by encoding the encrypted device/user identifier(s) 208 a-i into the ACRID 128 at block 508. In such some examples, the data collector 112locates the ACR ID 128 and the media ID 122, and/or the search term(s)1210, in the collected data 126 and/or 1214 at block 508. An exampleprocess that may be used to encrypt the device/user identifier(s) 124and encode the encrypted device/user identifiers 208 a-i is describedbelow in connection with FIG. 6 .

FIG. 11 is a flow diagram of an example process that may be used tocollect media identifiers (e.g., the media ID 122 of FIGS. 1, 9, and 10) and device and/or user identifiers (e.g., the device/useridentifier(s) 124 of FIGS. 1, 9, and 10 ) at a media publisher (e.g.,the media publisher 120 of FIGS. 1, 9, and 10 ). In the illustratedexample, the example process of FIG. 11 is performed by a processorsystem (e.g., a server) at the media publisher 120 in connection withthe example system 900 of FIG. 9 and/or the example system 1000 of FIG.10 . However, the example process of FIG. 11 may be performed by anyother device.

Initially, the media publisher 120 receives the device/useridentifier(s) 124 (block 1102) from, for example, the data collector 912of FIG. 9 or the data collector 1012 of FIG. 10 . For example, the mediapublisher 120 may receive the device/user identifier(s) 124 in an HTTPheader of an HTTP request from the mobile device 106. The mediapublisher 120 determines whether it should serve media (e.g., the media118 of FIGS. 9 and 10 ) (block 1104) to, for example, the mobile device106. For example, the media publisher 120 may receive a media serverequest from the mobile device 106 that was generated by the app program116 when executing on the mobile device 106. In the illustrated example,the media serve request is a request to serve an advertisement or othermedia to the mobile device 106 for presenting while the app program 116is executing. In some examples, the media serve request is received atblock 1102 when the media publisher 120 receives the device/useridentifier(s) 124. For example, media publisher 120 may receive themedia serve request from the mobile device 106 in the HTTP request thatincludes the device/user identifier(s) 124 in its HTTP header.

When the media publisher 120 determines at block 1104 that it shouldserve media (e.g., the media 118), the media publisher 120 retrieves themedia ID 122 from the media 118 to be served (block 1106). The mediapublisher 120 serves the media 118 (block 1108). For example, the mediapublisher 120 may use one or more of the device/user identifier(s) 124received at block 1102 to identify the mobile device 106 as a receivingdevice of the served media 118. The media publisher 120 locates themedia ID 122 and the device/user identifier(s) 124 in a message (block1110). For example, in the example system 900 of FIG. 9 , the mediapublisher 120 locates the media ID 122 and the device/user identifier(s)124 in the collected data message 902. Alternatively, in the examplesystem 1000 of FIG. 10 in which the apparatus 200 of FIG. 2 isimplemented at the media publisher 120, the media publisher 120generates the ACR ID 128 (FIGS. 2 and 10 ) based on the device/useridentifier(s) 124, and locates the media ID 122 and the ACR ID 128 inthe impression data 130 at block 1110. The media publisher 120 sends themedia ID 122 and the device/user identifier(s) 124 (block 1112), forexample, as the collected data 902 to the app publisher 110 as shown inFIG. 9 , or as the impression data 130 to the AME 108 as shown in FIG.10 . The example process of FIG. 11 then ends.

FIG. 15 is a flow diagram of an example process that may be executed tocollect search terms (e.g., the search term(s) 1210 of FIGS. 12-14 ) anddevice and/or user identifiers (e.g., the device/user identifiers 124 ofFIGS. 12-14 ) at a search provider (e.g., the search provider 1212 ofFIGS. 12-14 ). In the illustrated example, the example process of FIG.15 is performed by a processor system (e.g., a server) at the searchprovider 1212 in connection with the example system 1300 of FIG. 13and/or the example system 1400 of FIG. 14 . However, the example processof FIG. 15 may be performed by any other device.

Initially, the search provider 1212 receives the device/useridentifier(s) 124 (block 1502) from, for example, the data collector1312 of FIG. 13 or the data collector 1412 of FIG. 14 . For example, thesearch provider 1212 may receive the device/user identifier(s) 124 in anHTTP header of an HTTP request from the mobile device 106. The searchprovider 1212 receives the search term(s) 1210 from the app program 1204(block 1504). The search provider 1212 serves search results (block1506). For example, the search provider 1212 may use one or more of thedevice/user identifier(s) 124 received at block 1502 to identify themobile device 106 as a receiving device of the search results. Thesearch provider 1212 locates the search term(s) 1210 and the device/useridentifier(s) 124 in a message (block 1508). For example, in the examplesystem 1300 of FIG. 13 , the search provider 1212 locates the searchterm(s) 1210 and the device/user identifier(s) 124 in the collected datamessage 1302. Alternatively, in the example system 1400 of FIG. 14 inwhich the apparatus 200 of FIG. 2 is implemented at the search provider1212, the search provider 1212 generates the ACR ID 128 (FIGS. 2 and 14) based on the device/user identifier(s) 124, and locates the searchterm(s) 1210 and the ACR ID 128 in the user-interest data 1216 at block1508. The search provider 1212 sends the search term(s) 1210 and thedevice/user identifier(s) 124 (block 1510), for example, as thecollected data 1302 to the app publisher 110 as shown in FIG. 13 , or asthe user-interest data 1216 to the AME 108 as shown in FIG. 14 . Theexample process of FIG. 15 then ends.

FIG. 6 is a flow diagram of an example process to encrypt device and/oruser identifiers (e.g., the device/user identifier(s) 124 of FIGS. 1 and2 ), and to encode encrypted device and/or user identifiers (e.g., theencrypted device/user identifier(s) 208 a-i of FIGS. 2-4 ) into the ACRID 128 of FIGS. 1-4 . The example process of FIG. 6 may be performedwholly or partially at the app publisher 110 of FIGS. 1, 9, and 10 (oranother collection entity), wholly or partially at the mobile device 106(e.g., at block 508 of the example process of FIG. 5 ), wholly orpartially at the media publisher 120 of FIGS. 1, 9, and 10 , and/orwholly or partially at the search provider 1212 of FIGS. 12-14 . In someexamples, operations performed by the encryptor 202 (FIG. 2 ) may beperformed at the mobile device 106, and operations performed by theencoder 204 (FIG. 2 ) may be performed at the app publisher 110, at themedia publisher 120, and/or at the search provider 1212.

Initially, the encryptor 202 (FIG. 2 ) receives one or more of thedevice/user identifier(s) 124 (FIGS. 1 and 2 ) (block 602). Theencryptor 202 encrypts the device/user identifier(s) 124 (block 604) togenerate the encrypted device/user identifier(s) 208 a-i (FIG. 2 ). Inthe illustrated example, the encryptor 202 provides correspondingpartner database proprietor identifiers to corresponding ones of theencrypted device/user identifier(s) 208 a-i (block 606), for example, byappending, prepending, concatenating, or otherwise associating thepartner database proprietor identifiers to or with the encrypteddevice/user identifier(s) 208 a-i so that the partner databaseproprietor identifiers are accessible to the AME 108 without decryptingthe encrypted device/user identifier(s) 208 a-i. In particular, theidentifier of the database proprietor having the key to decrypt thecorresponding data is associated with the corresponding encrypted data.In this way, the AME 108 knows which database proprietor is to receivewhich data. The encoder 204 (FIG. 2 ) encodes the encrypted device/useridentifier(s) 208 a-i into the ACR ID 128 (block 608). In theillustrated example, the encoder 204 associates the ACR ID 128 with thecorresponding media ID 122, and/or the search term(s) 1210 (block 610).The encoder 204 sends the ACR ID 128 and the media ID 122, and/or thesearch term(s) 1210, to the AME 108 (block 612), for example, in theimpression data 130 (FIGS. 1, 9, and 10 ). The example process of FIG. 6then ends.

FIG. 7 is a flow diagram of an example process that may be used todecode encrypted device and/or user identifiers (e.g., the encrypteddevice/user identifiers 208 a-i of FIGS. 2-4 ) from the ACR ID 128 ofFIGS. 1-4 , and collect user information associated with the encrypteddevice and/or user identifiers from one or more corresponding partnerdatabase proprietor(s) (e.g., one or more of the partner databaseproprietors 102 a-e of FIGS. 1, 3, and 4 ). The example process of FIG.7 may be performed at the AME 108 (FIG. 1 ), for example, by the server132 (FIG. 1 ).

Initially, the server 132 receives the ACR ID 128 and the associatedmedia ID 122, and/or the search term(s) 1210 (block 702). For example,the server 132 may receive the ACR ID 128 and the media ID 122 in theimpression data 130 from the app publisher 110, from the media publisher120, and/or from the mobile device 106 of FIGS. 1, 9, and 10 .Additionally or alternatively, the server 132 may receive the ACR ID 128and the search term(s) 1210 in the user-interest data 1216 from the apppublisher 110, from the search provider 1212, and/or from the mobiledevice 106 of FIGS. 12-14 . The decoder 302 (FIGS. 3 and 4 ) decodes oneor more of the encrypted device/user identifier(s) 208 a-i from the ACRID 128 (block 704). The decoder 302 sends corresponding ones of theencrypted device/user identifier(s) 208 a-i to corresponding ones of thepartner database proprietor(s) 102 a-e (block 706), for example, basedon partner database proprietor identifiers provided to or associatedwith the encrypted device/user identifiers 208 a-i by the encryptor 202of FIG. 2 at block 606 of FIG. 6 . The server 132 receives one or moreof the user information 102 a-e from one or more of the partner databaseproprietor(s) 102 a-e (block 708). The server 132 logs a mediaimpression for the media ID 122 (block 710). In addition, the server 132associates the user information from at least one of the one or moreuser information 102 a-e with the logged impression for the media ID122, and/or with the search term(s) 1210 (block 712). The example server132 stores the resulting demographic impression (e.g., impression anduser information) in the media impressions store 134 (block 714). Theexample process of FIG. 7 then ends.

FIG. 16 depicts an example system 1600 to collect device informationfrom mobile devices at a merchant location 1602 for associating withimpressions of media presented at mobile devices. The example system1600 of FIG. 16 may be used in conjunction with the methods andapparatus disclosed herein to link ad impressions of a mobile deviceuser to purchasing behavior at a point of sale (POS) to more accuratelymeasure advertisement effectiveness.

In the example of FIG. 16 , the example mobile device 106 has entered amerchant location 1602 (e.g., a retail store, a kiosk, or any otherbrick-and-mortar merchant location). The example merchant location 1602is or is associated with a database proprietor 1604 that includes acollection interface 1606 and a database 1608. The example collectioninterface 1606 includes a communications interface 1610 and adevice/user identifier extractor 1612.

The example communications interface 1610 of FIG. 16 may be any wiredand/or wireless communications interface. For example, thecommunications interface 1610 may be a wireless local area network (LAN)access point and/or a wireless LAN router. When the example mobiledevice 106 enters a communications range of the communications interface1610, the mobile device 106 automatically scans and/or searches forwireless LAN access points and/or routers (e.g., to find an access pointthrough which it can connect to the Internet, thereby conserving alimited cellular data allotment). The example collection interface 1606collects data 1614 transmitted from the example mobile device 106.

In some examples, the mobile device 106 provides identifying information(e.g., in the collected data 1614), such as a media access control (MAC)address of one or more interfaces (e.g., a WiFi interface, a Bluetoothinterface, etc.). In some examples, the mobile device 106 may provideone or more user identifier(s) (e.g., in the collected data 1614) whenaccess to a wider network (e.g., the Internet) is provided via thecommunications interface 1610. The example device/user identifierextractor 1612 extracts the identifying information (e.g., the MACaddress, a user identifier, etc.) from the communications received fromthe example mobile device 106. The example device/user identifierextractor 1612 stores the extracted identifying information in theexample database 1608. In some examples, the device/user identifierextractor 1612 stores a timestamp of the mobile device communication,other extracted device and/or user identifiers, and/or a number of timesthe store location has been visited by the same mobile device 106 in thedatabase 1608 in association with the extracted identifying informationabout the mobile device 106.

In some examples, the communications interface 1610 also obtains signalstrength characteristics. For example, the communications interface 1610may measure the signal strength of communications received from themobile device 106. In combination with other collection interfaces 1606,the example collection interface 1606 may determine a more preciselocation of the mobile device within the merchant location 1602. Forexample, multiple (e.g., 3 or more) collection interfaces 1606 maytriangulate the position of the mobile device 106 to enable adetermination of what departments, store displays, products,advertisements, and/or other items of interest the mobile device 106approached and/or was otherwise proximate to. In some examples, a seriesof determined positions for the mobile device 106 may be used tointerpolate additional position(s) and, thus, corresponding departments,store displays, products, advertisements, and/or other items of interestthe mobile device 106 approached and/or was otherwise proximate to. Theprecise location information may then be used to more precisely creditadvertisement impressions (e.g., impressions occurring on the mobiledevice 106) with user behavior (e.g., purchasing or investigating theexposed products and/or services via physical store locations).

The example AME 108 transmits encrypted device/user identifier logs 136c to the example database proprietor 1604. In the example of FIG. 16 ,the AME 108 determines that the encrypted device/user identifier logs136 c correspond to (e.g., are to be transmitted to) the exampledatabase proprietor 1604 based on an unencrypted partner databaseproprietor identifier. The example encrypted device/user identifier logs136 c include at least those device/user identifier(s) of the type(s)collected by the example database proprietor 1604. On receiving theencrypted device/user identifier logs 136 c, the example partnerdatabase proprietor 1604 decrypts its respective encrypted device/useridentifier(s) using its copy(ies) of the encryption key(s). The partnerdatabase proprietor 1604 then looks up (e.g., from the database 1608)the mobile device(s) 106 corresponding to the decrypted device/useridentifiers, and collect corresponding device/user information (e.g., anumber of times the device 106 entered the location 1602; a set ofproducts, services, advertisements, and/or other items of interestwithin the location 1602 to which the user of the device 106 may havebeen exposed) for those users for sending to the AME 108. For example,if the partner database proprietor 1604 is a merchant (e.g., thelocation 1602 is a retail store), the encrypted device/user identifierlog 136 c may include MAC addresses, and the merchant accesses itsmonitoring records to find users and/or devices having MAC addressesmatching the MAC addresses received in the encrypted device/useridentifier log 136 c. When the users and/or devices are identified, themerchant copies the users' user information to location information 1615for delivery to the AME 108.

The example AME 108 receives the location information in associationwith the ACR ID. Using the ACR ID, the example AME 108 matches thelocation information to media impression information. The mediaimpression information may include media impressions delivered to theuser associated with the ACR ID via the mobile device 106 and/or via anyother platforms for which media impression data is collected (e.g.,personal computers).

To match the media impression information to the location information,the example AME 108 includes an impression matcher 1616. The exampleimpression matcher 1616 of FIG. 16 determines products, services,brands, and/or other entities that are advertised in the impressionsassociated with an ACR ID. For example, the impression matcher 1616 mayaccess an advertisement database 1618 that provides the entitycorresponding to each advertisement to be measured or monitored by theAME 108. The example impression matcher 1616 queries the exampleadvertisement database 1618 to determine the entities (e.g., products,services, brands, companies, etc.) that have been exposed on an ACR ID.

Using a list of the entities that have been exposed on a deviceassociated with an ACR ID, the example impression matcher 1616 matchesthe products and/or services to which the user corresponding to the ACRID has been exposed to the entities that have been exposed on a deviceassociated with the ACR ID. For example, the impression matcher 1616 maydetermine from the exposed that the user has been shown an advertisementfor a Rawlings® brand basketball. Based on the exposed product, theexample impression matcher 1616 then identifies that the user has beenpositioned sufficiently proximate to the basketballs area in themerchant location 1602 (e.g., a sporting goods store) based on thelocation information from the database proprietor 1604 to determine thatthe user may have further investigated the advertised basketball. Theexample impression matcher 1616 increases an effectiveness rating forthe example basketball advertisement based on the correlation betweenthe example impression and the subsequent proximity to the location. Theexample impression matcher 1616 may continue the cross-referencing ofimpressions to location information to determine which of theimpressions can be credited with potentially influencing user behavior.

In some examples, the determination of user proximity to products and/orservices based on the location information is performed by the exampledatabase proprietor 1604, which may have a more detailed and/orup-to-date mapping of areas within the merchant location 1602 toproducts, services, brands, and/or other entities. In such examples, theexample database proprietor 1604 may provide the proximity informationin combination with and/or as a substitute for position informationwithin the merchant location 1602 (e.g., which aisle the mobile device106 was in, what displays the mobile device 106 was proximate to, etc.).Example methods and apparatus to monitor behavior of persons in a retaillocation are described in U.S. patent application Ser. No. 11/957,227,which is incorporated by reference in its entirety.

FIG. 17 is a flowchart representative of example machine readableinstructions which may be executed to implement the example collectioninterface 1606, the example database 1608, the example communicationsinterface 1610, the example device/user identifier extractor 1612and/or, more generally, the example database proprietor 1604 of FIG. 16to collect location data from a user and/or a mobile device.

The example communications interface 1610 of FIG. 16 monitors for mobiledevice communications (block 1702). For example, the communicationsinterface 1610 may monitor for mobile device communications that “ping”a local area for wireless network information. If the examplecommunications interface 1610 detects a mobile device (block 1704), theexample device/user identifier extractor 1612 extracts device/useridentifier(s) from the mobile device communications (block 1706). Forexample, the device/user identifier extractor 1612 may extractinformation such as a MAC address from one or more of the mobiledevice's wireless interfaces. The example device/user identifierextractor 1612 stores extracted identifier(s) (e.g., in the database1608) (block 1708).

After storing the extracted identifier(s) (block 1708), or if a mobiledevice is not detected (block 1704), the example database proprietor1604 determines whether encrypted device/user identifier log(s) havebeen received (block 1710). If encrypted device/user identifier log(s)have not been received (block 1710), control returns to block 1702.

When encrypted device/user identifier log(s) have been received (block1710), the example database proprietor 1604 decrypts the device/useridentifier(s) (block 1712). For example, the database proprietor 1604may use a private key to decrypt the device/user identifier(s) encryptedby the AME 108 using the database proprietor's 1604 respective key. Theexample database proprietor 1604 selects a decrypted device/useridentifier (block 1714) and determines whether the selected device/useridentifier is present in the database 1608 (block 1716). For example,the device/user identifier may be present in the database 1608 if themobile device corresponding to the device/user identifier (e.g., themobile device 106) has visited the location 1602 monitored by theexample database proprietor 1604.

If the selected device/user identifier is present in the database (block1716), the example database proprietor 1604 adds the selecteddevice/user identifier and associated location information to a reportwith the ACR ID of the device/user identifier (block 1718). For example,the database proprietor 1604 may add information to the reportdescribing which products, services, brands, and/or other entities towhich the mobile device 106 was proximate. The example databaseproprietor 1604 associates the information with the ACR ID (e.g.,received in association with the encrypted device/user identifier) inthe report.

The example database proprietor 1604 determines whether there areadditional decrypted device/user identifiers for which locationinformation is to be determined (block 1720). If there are additionaldecrypted device/user identifiers (block 1720), control returns to block1714. On the other hand, when there are no additional device/useridentifiers (block 1720), the example database proprietor 1604 sends thegenerated report (e.g., the ACR IDs and location information) to the AME108 (block 1722). Control returns to block 1702 to continue monitoringfor mobile device communications.

FIG. 18 is a flowchart representative of example machine readableinstructions which may be executed to implement the example AME 108 ofFIG. 16 to associate media impressions with mobile device locationinformation. The example instructions of FIG. 18 may be performed inconjunction with the example instructions of FIG. 7 described above.

The example server 132 of FIG. 16 receives the ACR ID 128 and theassociated media ID 122, and/or the search term(s) 1210 (block 1802).For example, the server 132 may receive the ACR ID 128 and the media ID122 in the impression data 130 from the app publisher 110, from themedia publisher 120, and/or from the mobile device 106 as describedabove with respect to FIGS. 1, 9, 10 , and/or 16. Additionally oralternatively, the server 132 may receive the ACR ID 128 and the searchterm(s) 1210 in the user-interest data 1216 from the app publisher 110,from the search provider 1212, and/or from the mobile device 106 ofFIGS. 12-14 . The decoder 302 (FIGS. 3 and 4 ) decodes one or more ofthe encrypted device/user identifier(s) 208 a-i from the ACR ID 128(block 1804). The decoder 302 sends corresponding ones of the encrypteddevice/user identifier(s) 208 a-i (e.g., the encrypted device identifierlogs 136 c) to corresponding ones of the partner database proprietor(s)104 a, 104 b, 1604 (block 1806), for example, based on partner databaseproprietor identifiers provided to or associated with the encrypteddevice/user identifiers 208 a-i by the encryptor 202 of FIG. 2 at block606 of FIG. 6 . The example instructions of FIG. 17 may be executed whenthe decoder 302 sends the encrypted device/user identifier logs 136 c tothe example database proprietor 1604 of FIG. 16 . Based on execution ofthe instructions of FIG. 17 , the example server 132 receiveslocation/proximity information 102 c from the example databaseproprietor 1604.

The example impression matcher 1616 of FIG. 16 receives locationinformation from the database proprietors (e.g., the database proprietor1604 of FIG. 16 ) (block 1808). The example impression matcher 1616determines the advertised entities for the ACR ID based on theimpressions (block 1810). For example, the impression matcher 1616determines a product, service, brand, company, or other entity that isadvertised in each impression by performing a look up in the database1618 of FIG. 16 . The ad may be a traditional advertisement or anintentionally placed product in a media program. Example methods andapparatus to identify intentionally placed products are described inU.S. patent application Ser. No. 12/049,077, which is incorporated byreference in its entirety.

The example impression matcher 1616 of FIG. 16 selects an advertisedentity (e.g., product, service, brand, company, etc.) for an ACR ID(block 1812). The impression matcher 1616 determines whether thelocation and/or proximity information corresponds to the selectedadvertised entity (block 1814). For example, the impression matcher 1616may attempt to cross-reference the advertised entity to the locationand/or proximity information received for the ACR ID (e.g., determinewhether the user or mobile device was proximate to the selectedadvertised entity). If the location and/or proximity informationcorresponds to the selected advertised entity (block 1814), the exampleimpression matcher 1616 associates the advertisement impression for theselected advertised entity with user behavior (block 1816). For example,the impression matcher 1616 may indicate that the advertisementimpression resulted in (or is at least correlated with) the userapproaching the advertised entity of the advertisement impression.

After associating the impression with the user behavior (block 1816) orif the location/proximity information does not correspond to theselected advertised entity (block 1814), the example impression matcher1616 determines whether there are additional advertised entities for theACR ID (block 1818). If there are additional advertised entities for theACR ID (block 1818), control returns to block 1812. When there are noadditional advertised entities for the ACR ID (block 1818), the exampleinstructions of FIG. 18 end.

FIG. 19 is a table 1900 showing example information that may becollected and stored at the example database proprietor 1604 (e.g., inthe database 1608) of FIG. 16 . The example table 1900 includes a set ofentries 1902-1912. Each of the example entries includes a device/useridentifier 1914, a timestamp 1916, a location code 1918, proximityinformation 1920, and one or more keywords 1922.

The example device/user identifier 1914 of FIG. 19 is a uniquedevice/user identifier that may be used to match location data to an ACRID (e.g., an ACR ID received in a request for user information from theAME 108). In the example of FIG. 19 , the device/user identifiers 1914are MAC addresses of mobile device wireless interfaces. However,additional and/or alternative device/user identifiers may be used.

The example location code 1918 may designate an area within the location(e.g., the location 1602) at which the mobile device 106 correspondingto the ID 1914 is determined to be (e.g., based on triangulation and/orother location techniques). Example location codes 1918 are illustratedin FIG. 19 , but any other location designator may be used.

The example proximity information 1920 of FIG. 19 identifies products,services, store displays, and/or other entities or items to which themobile device 106 is determined to have been exposed based on thelocation information. For example, when the mobile device 106 isdetermined to be in location corresponding to location code 1918 A14(e.g., entry 1902), the example database proprietor 1604 may determinethat the user of the mobile device 106 is proximate to products havingthe codes (e.g., UPCs, internal identifiers, universal identifiers,etc.) listed in the proximity field 1920. Additionally or alternatively,the example table 1900 includes keywords 1922 corresponding to theproximity information to, for example, facilitate searching orcross-referencing by the AME 108 to match impressions to proximityinformation. For example, the keywords 1922 for the entry 1902 describethe example proximity codes 1920 for the entry 1902.

In some examples, the table 1900 stores location information broken intomultiple entries, such as entries 1906 and 1908. The example entries1906, 1908 share the same device/user identifier 1914, timestamp 1916,and location code 1918, but split the proximity codes 1920 and keywords1922 to, for example, organize the products, services, store displays,and/or other entities or items in the table 1900. In some otherexamples, shown in entries 1904 and 1910, 1912, the example table 1900includes one or the other of the proximity information 1920 and/or thekeywords 1922.

FIG. 20 is a table 2000 showing example matching of impressioninformation to location information provided by the database proprietor1604 of FIG. 16 . The example table 2000 may be constructed and/orpopulated by, for example, the impression matcher 1616 of FIG. 16 , andincludes a set of entries 2002-2008 that associate or match an ACR ID2010 to a media identifier 2012 and a location identifier 2014. In someexamples, the ACR ID 2010 may be used to associate the media identifier2012 with the location identifier 2014, but may then be omitted (e.g.,not stored in the table 2000) when the association between the mediaidentifier 2012 and the location identifier 2014 is made.

The example media identifier 2012 uniquely identifies each item of media(e.g., advertisement, content, etc.) that may be shown to the exampleuser and/or via the example mobile device 106 associated with the user.The example location identifier 2014 uniquely identifies the location(e.g., a merchant location such as a particular retail store, or anyother location) where user behavior is identified that may be attributedto the media corresponding to the media identifier 2012. For example, alocation identifier may identify a particular location (e.g., themerchant location 1602 of FIG. 16 , one retail location in a retailchain, etc.) of the database proprietor 1604, whereas a differentlocation identifier may identify another particular location of the samedatabase proprietor 1604. The example table 2000 may include duplicatesof entries 2002-2008 for different ACR ID's and/or may include a fieldindicating the number of occurrences of a particular entry 2002-2008.

The example AME 108 analyzes the table 2000 to determine aneffectiveness of the media being presented to users by determining whichmedia (e.g., advertisements, content, product placements, etc.)influence consumer behavior. For example, media identifiers that areassociated with larger numbers of location identifiers and/or largernumbers of occurrences of an association may be considered to be moreeffective at influencing user behavior.

FIG. 21 depicts an example system 2100 to collect device informationfrom mobile devices at a media location 2102 for collecting impressioninformation for mobile devices. The example media location 2102 of FIG.21 is associated with a database proprietor 2104 and includes acollection interface 2106 a. The collection interface 2106 a of thisexample includes a communications interface 2110 a and a device/useridentifier extractor 2112 a. The example collection interface 2106 a isassociated with designated media 2113 a (e.g., a billboard, indoorand/or outdoor signage, or other fixed location media presentations) andidentifies unique device/user identifiers 124 of mobile devices (e.g.,the mobile device 106) that enter the media location 2102. Similar oridentical collection interfaces 2106 b, 2106 c are associated with otherrespective media 2113 b, 2113 c. The example collection interfaces 2106a-2106 c, the example communications interface 2110 a, and the exampledevice/user identifier extractor 2112 a may be similar or identical torespective ones of the collection interfaces 1606, the examplecommunications interface 1610, and the example device/user identifierextractor 1612 of FIG. 16 .

When the mobile device 106 is determined to have entered the medialocation 2102 associated with the media 2113 a, the example collectioninterface 2106 a collects data 2114 a including the identifiers 124 fromthe mobile device 106. The example collection interface 2106 a (e.g.,via the communications interface 2110 a and the device/user identifierextractor 2112 a) extracts the device/user identifier 124 fromcommunications from the mobile device 106.

The example database proprietor 2104 of FIG. 21 includes a dataassembler 2116 to collect the extracted data from the example collectioninterfaces 2106 a-2106 c. The example database proprietor 2104 storesthe extracted data (e.g., in the database 2108) in association withidentifiers of the locations from which the identifiers were collectedand/or the media associated with the locations. Thus, the exampledatabase proprietor 2104 collects and stores information identifyingmobile devices and/or users that were within a sufficient distance forthe user to be considered to have been exposed to the media 2113 a-2113c.

When the example AME 108 of FIG. 21 transmits encrypted device/useridentifier logs 136 a, 136 b, the AME 108 further transmits encrypteddevice/user identifier logs 136 c to the example database proprietor2104. The example encrypted device/user identifier logs 136 c includesat least those device/user identifier(s) of the type(s) collected by theexample database proprietor 2104. On receiving the encrypted device/useridentifier logs 136 c, the example partner database proprietor 2104decrypts its respective encrypted device/user identifier(s) using itscopy(ies) of the encryption key(s). The partner database proprietor 2104then looks up (e.g., from the database 2108) the mobile device(s) 106corresponding to the decrypted device/user identifiers, and collectscorresponding device/user information (e.g., a number of times thedevice 106 entered media location(s) and/or an identification of themedia to which those users were exposed at the location(s)) for sendingto the AME 108. For example, the encrypted device/user identifier log136 c may include MAC addresses, and the partner database proprietor2104 accesses the database 2108 to identify users and/or devices havingMAC addresses matching the MAC addresses received in the encrypteddevice/user identifier log 136 c. When the users and/or devices areidentified, the partner database proprietor 2104 copies the users' userinformation and the media to which the identified users were exposed toimpression information 2118 for delivery to the AME 108.

The example AME 108 receives the impression information 2118 includingthe ACR ID. Using the ACR ID, the example AME 108 matches the mediaimpression information 2118 associated with the media locations to theuser information (e.g., received from the database proprietors 104 a,104 b). The impression information 2118 is further associated withimpression information obtained from the mobile device 106, demographicinformation obtained from other partner database proprietors (e.g., thedatabase proprietors 104 a, 104 b of FIG. 21 ), and/or user behaviorinformation obtained from the database proprietor 1604 of FIG. 16 asdescribed in detail above. By matching the media impression information2118 to the user information, the example AME 108 may supplement thelocation-based media impression data with demographic information. Themedia impression information 2118 may include media impressionsdelivered to the user associated with the ACR ID via the mobile device106 and/or via any other platforms for which media impression data iscollected (e.g., personal computers).

FIG. 22 is a flowchart representative of example machine readableinstructions which may be executed to implement the example dataassembler 2116, the example database 2108, the example communicationsinterface 2110, the example device/user identifier extractor 2112and/or, more generally, the example collection interface 2106 and/or theexample database proprietors 1604 a-1604 c of FIG. 21 to collectimpression data from a user and/or a mobile device.

The example communications interface 1610 of FIG. 16 monitors for mobiledevice communications (block 2202). For example, the communicationsinterface 2110 a may monitor for mobile device communications that“ping” a local area for wireless network information. If the examplecommunications interface 2110 a detects a mobile device (block 2204),the example device/user identifier extractor 2112 a extracts device/useridentifier(s) from the mobile device communications (block 2206). Forexample, the device/user identifier extractor 2112 a may extractinformation such as a MAC address from one or more of the mobiledevice's wireless interfaces. The example device/user identifierextractor 2112 a stores extracted identifier(s) (e.g., in the database2108) (block 2208). The example device/user identifier extractor 2112 aalso stores a current media identifier (e.g., an identifier of mediabeing displayed at the time of receipt or extraction of the deviceidentifier) (block 2209). For example, some location-based displays mayperiodically or aperiodically change the media being displayed (e.g.,cycle through a series of advertisements, changing the advertisementevery X seconds, etc.). In examples in which the media is relativelystatic (e.g., not changed often), block 2209 may be omitted.

After storing the extracted identifier(s) (block 2208) and/or thecurrent advertisement identifier (block 2209), or if a mobile device isnot detected (block 2204), the example database proprietor 2104determines whether encrypted device/user identifier log(s) have beenreceived (block 2210). If encrypted device/user identifier log(s) havenot been received (block 2210), control returns to block 2202.

When encrypted device/user identifier log(s) have been received (block2210), the example database proprietor 1604 decrypts the device/useridentifier(s) (block 2212). For example, the database proprietor 1604may use a private key to decrypt the device/user identifier(s) encryptedby the AME 108 using the database proprietor's 1604 respective key. Theexample database proprietor 1604 selects a decrypted device/useridentifier (block 2214) and determines whether the selected device/useridentifier is present in the database 1608 (block 2216). For example,the device/user identifier may be present in the database 1608 if themobile device corresponding to the device/user identifier (e.g., themobile device 106) has visited the location 1602 monitored by theexample database proprietor 1604.

If the selected device/user identifier is present in the database (block2216), the example database proprietor 1604 adds the selecteddevice/user identifier and associated media impression information to areport with the ACR ID of the device/user identifier (block 2218). Forexample, the database proprietor 1604 may add information to the reportdescribing the media to which the user of the media device 106 wasexposed. The example database proprietor 1604 associates the informationwith the ACR ID (e.g., received in association with the encrypteddevice/user identifier) in the report.

After adding the selected device/user identifier and impressioninformation to the report (block 2218), or if the selected device/useridentifier is not present in the database 2108 (block 2216). The exampledatabase proprietor 1604 determines whether there are additionaldecrypted device/user identifiers for which location information is tobe determined (block 2220). If there are additional decrypteddevice/user identifiers (block 2220), control returns to block 2214. Onthe other hand, when there are no additional device/user identifiers(block 2220), the example database proprietor 1604 sends the generatedreport (e.g., the ACR IDs and location information) to the AME 108(block 2222). Control returns to block 2202 to continue monitoring formobile device communications.

FIG. 23 is a flowchart representative of example machine readableinstructions which may be executed to implement the example AME 108 ofFIG. 21 to obtain impression information for a user and/or a mobiledevice.

The example server 132 of FIG. 16 receives the ACR ID 128 and theassociated media ID 122, and/or the search term(s) 1210 (block 2302).For example, the server 132 may receive the ACR ID 128 and the media ID122 in the impression data 130 from the app publisher 110, from themedia publisher 120, and/or from the mobile device 106 as describedabove with respect to FIGS. 1, 9, 10, 12, 13 , and/or 14. Additionallyor alternatively, the server 132 may receive the ACR ID 128 and thesearch term(s) 1210 in the user-interest data 1216 from the apppublisher 110, from the search provider 1212, and/or from the mobiledevice 106 of FIGS. 12-14 . The decoder 302 (FIGS. 3 and 4 ) decodes oneor more of the encrypted device/user identifier(s) 208 a-i from the ACRID 128 (block 2304). The decoder 302 sends corresponding ones of theencrypted device/user identifier(s) 208 a-i to corresponding ones of thepartner database proprietor(s) 104 a, 104 b, 2104 (block 2306), forexample, based on partner database proprietor identifiers provided to orassociated with the encrypted device/user identifiers 208 a-i by theencryptor 202 of FIG. 2 at block 606 of FIG. 6 .

The example impression matcher 1616 of FIG. 21 receives impressioninformation 2118 from the database proprietors (e.g., the databaseproprietor 2104 of FIG. 21 ) (block 2308). The example impressioninformation 2118 includes an ACR ID associated with a media identifier.For example, the impression information 2118 include elements similar tothe ACR ID 2010 and the media identifier 2012 of FIG. 20 . The exampleAME 108 adds the impression information 2118 received from the databaseproprietor 2104 to the impression information corresponding to the ACRIDs (block 2310). For example, the AME 108 may have a list of mediaimpressions for a given ACR ID. The example AME 108 adds the mediaimpressions that are received from the database proprietor 2104 andassociated with the ACR ID to the list of media impressions, therebyincreasing the amount of information pertaining to the impressions ofthe users about whom impression data is collected. The exampleinstructions of FIG. 23 end.

In some examples, the AME 108 further determines the demographic of theaudience for the example location-based media for which data iscollected via the database proprietor 2104. Thus, the audiencedemographics of the example media and/or the example locations at whichthe location-based media are presented can be accurately measured.

While an example manner of implementing the 200, 300 and the systems1600, 2100 are illustrated in FIGS. 2, 3, 4, 12, 13, 14, 16 , and/or 21,one or more of the elements, processes and/or devices illustrated inFIGS. 2, 3, 4, 12, 13, 14, 16 , and/or 21 may be combined, divided,re-arranged, omitted, eliminated and/or implemented in any other way.Further, the example encryptor 202, the example encoder 204, the exampledecoder 302, the example database proprietors 1604, 2104, the examplecollection interfaces 1606, 2106 a-2106 c, the example communicationinterfaces 1610, 2110, the example device/user identifier extractors1612, 2112, the example impression matcher 1616, the example database1618, the example data assembler 2116 and/or, more generally, theexample apparatus 200 and/or 300 and/or systems 1600 and/or 2100 ofFIGS. 2, 3, 4, 12, 13, 14, 16 , and/or 21 may be implemented byhardware, software, firmware and/or any combination of hardware,software and/or firmware. Thus, for example, any of the exampleencryptor 202, the example encoder 204, the example decoder 302, theexample database proprietors 1604, 2104, the example collectioninterfaces 1606, 2106 a-2106 c, the example communication interfaces1610, 2110, the example device/user identifier extractors 1612, 2112,the example impression matcher 1616, the example database 1618 and/or,more generally, the example apparatus 200 and/or 300 and/or systems 1600and/or 2100 could be implemented by one or more analog or digitalcircuit(s), logic circuits, programmable processor(s), applicationspecific integrated circuit(s) (ASIC(s)), programmable logic device(s)(PLD(s)) and/or field programmable logic device(s) (FPLD(s)). A logiccircuit is a non-human hardware device (e.g., an electronic device, asemiconductor device) capable of implementing Boolean logic. Whenreading any of the apparatus or system claims of this patent to cover apurely software and/or firmware implementation, at least one of theexample encryptor 202, the example encoder 204, the example decoder 302,the example database proprietors 1604, 2104, the example collectioninterfaces 1606, 2106 a-2106 c, the example communication interfaces1610, 2110, the example device/user identifier extractors 1612, 2112,the example impression matcher 1616, the example database 1618, and/or,the example data assembler 2116 is/are hereby expressly defined toinclude a tangible computer readable storage device or storage disk suchas a memory, a digital versatile disk (DVD), a compact disk (CD), aBlu-ray disk, etc. storing the software and/or firmware. Further still,the example 200, 300 and the systems 1600, 2100 of FIGS. 2, 3, 4, 12,13, 14, 16 , and/or 21 may include one or more elements, processesand/or devices in addition to, or instead of, those illustrated in FIGS.2, 3, 4, 12, 13, 14, 16 , and/or 21, and/or may include more than one ofany or all of the illustrated elements, processes and devices.

FIG. 8 is a block diagram of an example computer 800 capable ofexecuting the instructions of FIGS. 5-7, 11, 15, 17, 18, 22, and 23 toimplement the apparatus 200 and/or 300 and/or the systems 1600 and/or2100 of FIGS. 2, 3, 4, 12, 13, 14, 16 , and/or 21. The computer 800 canbe, for example, a server, a personal computer, or any other type ofcomputing device. The system 800 of the illustrated example includes aprocessor 812. For example, the processor 812 can be implemented by oneor more microprocessors or controllers from any desired family ormanufacturer.

The processor 812 includes a local memory 813 (e.g., a cache) and is incommunication with a main memory including a volatile memory 814 and anon-volatile memory 816 via a bus 818. The volatile memory 814 may beimplemented by Synchronous Dynamic Random Access Memory (SDRAM), DynamicRandom Access Memory (DRAM), RAMBUS Dynamic Random Access Memory (RDRAM)and/or any other type of random access memory device. The non-volatilememory 816 may be implemented by flash memory and/or any other desiredtype of memory device. Access to the main memory 814, 816 is controlledby a memory controller.

The computer 800 also includes an interface circuit 820. The interfacecircuit 820 may be implemented by any type of interface standard, suchas an Ethernet interface, a universal serial bus (USB), and/or a PCIexpress interface.

One or more input devices 822 are connected to the interface circuit820. The input device(s) 822 permit a user to enter data and commandsinto the processor 812. The input device(s) can be implemented by, forexample, a keyboard, a mouse, a touchscreen, a track-pad, a trackball,isopoint and/or a voice recognition system.

One or more output devices 824 are also connected to the interfacecircuit 820. The output devices 824 can be implemented, for example, bydisplay devices (e.g., a liquid crystal display, a cathode ray tubedisplay (CRT), a printer and/or speakers). The interface circuit 820,thus, typically includes a graphics driver card.

The interface circuit 820 also includes a communication device such as amodem or network interface card to facilitate exchange of data withexternal computers via a network 826 (e.g., an Ethernet connection, adigital subscriber line (DSL), a telephone line, coaxial cable, acellular telephone system, etc.).

The computer 800 also includes one or more mass storage devices 828 forstoring software and data. Examples of such mass storage devices 828include floppy disk drives, hard drive disks, compact disk drives anddigital versatile disk (DVD) drives.

Coded instructions 832 representative of machine readable instructionsof FIGS. 5-7, 11, 15, 17, 18, 22 , and/or 23 may be stored in the massstorage device 828, in the volatile memory 814, in the non-volatilememory 816, and/or on a removable storage medium such as a CD or DVD.

Although certain example methods, apparatus and articles of manufacturehave been disclosed herein, the scope of coverage of this patent is notlimited thereto. On the contrary, this patent covers all methods,apparatus and articles of manufacture fairly falling within the scope ofthe claims of this patent.

What is claimed is:
 1. An apparatus comprising: memory; instructions inthe apparatus; and at least one processor configured to execute theinstructions to: monitor for a mobile device communication at a merchantlocation; obtain a first identifier from the mobile device communicationobtained at a first server in response to identifying the mobile devicecommunication during the monitoring; store the first identifier inassociation with the merchant location in a database; and in response todetermining that the first identifier is present in the database, sendan association between the first identifier and the merchant location toa second server of an audience measurement entity, the first identifierincluded in a second communication from the second server of theaudience measurement entity.
 2. The apparatus of claim 1, wherein thefirst identifier includes a media access control address of a mobiledevice or a user identifier transmitted by the mobile device.
 3. Theapparatus of claim 1, wherein the at least one processor is configuredto encrypt the association between the first identifier and the merchantlocation prior to sending the association to the audience measuremententity.
 4. The apparatus of claim 1, wherein the at least one processoris configured to store a media identifier of media being displayed at atime of extraction of the first identifier.
 5. The apparatus of claim 4,wherein the at least one processor is configured to send the mediaidentifier in association with the first identifier.
 6. The apparatus ofclaim 1, wherein the at least one processor is configured to decrypt thefirst identifier obtained from the audience measurement entity.
 7. Theapparatus of claim 1, wherein the at least one processor is configuredto: access a second identifier obtained from the audience measuremententity in association with the first identifier; and send, to the secondserver, an association between the second identifier and at least one ofthe first identifier or the merchant location.
 8. The apparatus of claim1, wherein the at least one processor is configured to store at leastone of a timestamp, a location code, proximity information, or akeyword.
 9. An apparatus comprising: means for monitoring for a mobiledevice communication at a merchant location; and means for extracting afirst identifier from the mobile device communication obtained at afirst server in response to identifying the mobile device communicationduring the monitoring; the means for monitoring to: store the firstidentifier in association with the merchant location in a database; andin response to determining that the first identifier is present in thedatabase, send an association between the first identifier and themerchant location to a second server of an audience measurement entity,the first identifier included in a second communication from the secondserver of the audience measurement entity.
 10. The apparatus of claim 9,wherein the first identifier includes a media access control address ofa mobile device or a user identifier transmitted by the mobile device.11. The apparatus of claim 9, further including means for encrypting theassociation between the first identifier and the merchant location priorto sending the association to the audience measurement entity.
 12. Theapparatus of claim 9, wherein the means for extracting is to store amedia identifier of media being displayed at a time of extraction of thefirst identifier.
 13. The apparatus of claim 12, wherein the means formonitoring is to send the media identifier in association with the firstidentifier.
 14. The apparatus of claim 9, further including means fordecrypting the first identifier obtained from the audience measuremententity.
 15. The apparatus of claim 9, wherein the means for monitoringis to: access a second identifier obtained from the audience measuremententity in association with the first identifier; and send an associationbetween the second identifier and at least one of the first identifieror the merchant location.
 16. The apparatus of claim 9, wherein themeans for monitoring is to store at least one of a timestamp, a locationcode, proximity information, or a keyword.
 17. A system, comprising:means for accessing communications, the means for accessingcommunications to: receive, via a first network communication, anencrypted identifier corresponding to a mobile device and a mediaidentifier, the encrypted identifier and the media identifier reportedby the mobile device based on the mobile device accessing mediacorresponding to the media identifier, the encrypted identifier to hidea first identifier identifying the mobile device or a user of the mobiledevice, and the encrypted identifier decryptable by a databaseproprietor to determine a decrypted identifier, the database proprietorbeing separate from an audience measurement entity, and the databaseproprietor to associate the decrypted identifier with the mobile deviceor the user of the mobile device; send, via a second networkcommunication, a request for mobile device presence information to asecond server of the database proprietor that stores the decryptedidentifier when the mobile device is present at a merchant location, therequest including the encrypted identifier; and receive, via a thirdnetwork communication from the second server of the database proprietor,an indication that the mobile device was present at the merchantlocation; and means for storing behavior information, the means forstoring behavior information to: query an advertisement database toidentify an advertised entity corresponding to the media identifier; andstore behavior information corresponding to the user of the mobiledevice with at least one of the encrypted identifier or the mediaidentifier based on using network communications to correlateinformation associated with the user and stored across differentnetwork-connected devices without revealing the identity of the user tothe audience measurement entity.
 18. The system of claim 17, wherein themeans for storing behavior information is to determine whether thedatabase proprietor is associated with the advertised entity.
 19. Thesystem of claim 18, wherein the means for storing behavior informationis to associate the advertised entity with the behavior information. 20.The system of claim 18, wherein the means for storing behaviorinformation is to determine that an advertisement corresponding to themedia identifier at least one of resulted in or is correlated with theuser of the mobile device visiting the merchant location.
 21. The systemof claim 17, wherein the means for storing behavior information is toassociate the media identifier and the encrypted identifier with asecond identifier, the second identifier corresponding to at least oneof the mobile device or the user of the mobile device.
 22. The system ofclaim 21, wherein the second identifier is associated with a presence ata second merchant location.